import UBI libxml2-2.9.7-19.el8_10

SOURCES/libxml2-2.11.0-fix-CVE-2023-39615.patch

@@ -0,0 +1,32 @@
+From d0c3f01e110d54415611c5fa0040cdf4a56053f9 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Sat, 6 May 2023 17:47:37 +0200
+Subject: [PATCH] parser: Fix old SAX1 parser with custom callbacks
+
+For some reason, xmlCtxtUseOptionsInternal set the start and end element
+SAX handlers to the internal DOM builder functions when XML_PARSE_SAX1
+was specified. This means that custom SAX handlers could never work with
+that flag because these functions would receive the wrong user data
+argument and crash immediately.
+
+Fixes #535.
+---
+ parser.c | 2 --
+ 1 file changed, 2 deletions(-)
+
+diff --git a/parser.c b/parser.c
+index bb05791d3..0c8bed129 100644
+--- a/parser.c
++++ b/parser.c
+@@ -14479,8 +14479,6 @@ xmlCtxtUseOptionsInternal(xmlParserCtxtPtr ctxt, int options, const char *encodi
+     }
+ #ifdef LIBXML_SAX1_ENABLED
+     if (options & XML_PARSE_SAX1) {
+-        ctxt->sax->startElement = xmlSAX2StartElement;
+-        ctxt->sax->endElement = xmlSAX2EndElement;
+         ctxt->sax->startElementNs = NULL;
+         ctxt->sax->endElementNs = NULL;
+         ctxt->sax->initialized = 1;
+-- 
+GitLab
+

SOURCES/libxml2-2.9.13-CVE-2022-49043.patch

@@ -0,0 +1,34 @@
+From 6bb146a3ea24a9bacfad6fe67268f0404af37d9c Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Wed, 2 Nov 2022 16:13:27 +0100
+Subject: [PATCH] malloc-fail: Fix use-after-free in xmlXIncludeAddNode
+
+Found with libFuzzer, see #344.
+---
+ xinclude.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/xinclude.c b/xinclude.c
+index 2a0614d7..e32b3419 100644
+--- a/xinclude.c
++++ b/xinclude.c
+@@ -614,14 +614,15 @@ xmlXIncludeAddNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur) {
+     }
+     URL = xmlSaveUri(uri);
+     xmlFreeURI(uri);
+-    xmlFree(URI);
+     if (URL == NULL) {
+ 	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
+ 	               "invalid value URI %s\n", URI);
+ 	if (fragment != NULL)
+ 	    xmlFree(fragment);
++        xmlFree(URI);
+ 	return(-1);
+     }
++    xmlFree(URI);
+ 
+     /*
+      * If local and xml then we need a fragment
+-- 
+2.48.1
+

SOURCES/libxml2-2.9.13-CVE-2023-28484.2.patch

@@ -0,0 +1,71 @@
+From 4c6922f763ad958c48ff66f82823ae21f2e92ee6 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 13 Sep 2022 16:40:31 +0200
+Subject: [PATCH] schemas: Fix null-pointer-deref in
+ xmlSchemaCheckCOSSTDerivedOK
+
+Found by OSS-Fuzz.
+---
+ result/schemas/oss-fuzz-51295_0_0.err |  2 ++
+ test/schemas/oss-fuzz-51295_0.xml     |  1 +
+ test/schemas/oss-fuzz-51295_0.xsd     |  4 ++++
+ xmlschemas.c                          | 15 +++++++++++++--
+ 4 files changed, 20 insertions(+), 2 deletions(-)
+ create mode 100644 result/schemas/oss-fuzz-51295_0_0.err
+ create mode 100644 test/schemas/oss-fuzz-51295_0.xml
+ create mode 100644 test/schemas/oss-fuzz-51295_0.xsd
+
+diff --git a/result/schemas/oss-fuzz-51295_0_0.err b/result/schemas/oss-fuzz-51295_0_0.err
+new file mode 100644
+index 00000000..1e89524f
+--- /dev/null
++++ b/result/schemas/oss-fuzz-51295_0_0.err
+@@ -0,0 +1,2 @@
++./test/schemas/oss-fuzz-51295_0.xsd:2: element element: Schemas parser error : element decl. 'e': The element declaration 'e' defines a circular substitution group to element declaration 'e'.
++./test/schemas/oss-fuzz-51295_0.xsd:2: element element: Schemas parser error : element decl. 'e': The element declaration 'e' defines a circular substitution group to element declaration 'e'.
+diff --git a/test/schemas/oss-fuzz-51295_0.xml b/test/schemas/oss-fuzz-51295_0.xml
+new file mode 100644
+index 00000000..10a7e703
+--- /dev/null
++++ b/test/schemas/oss-fuzz-51295_0.xml
+@@ -0,0 +1 @@
++<e/>
+diff --git a/test/schemas/oss-fuzz-51295_0.xsd b/test/schemas/oss-fuzz-51295_0.xsd
+new file mode 100644
+index 00000000..fde96af5
+--- /dev/null
++++ b/test/schemas/oss-fuzz-51295_0.xsd
+@@ -0,0 +1,4 @@
++<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
++    <xs:element name="e" substitutionGroup="e"/>
++    <xs:element name="t" substitutionGroup="e" type='xs:decimal'/>
++</xs:schema>
+diff --git a/xmlschemas.c b/xmlschemas.c
+index f31d3d1f..152b7c3f 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -13345,8 +13345,19 @@ xmlSchemaResolveElementReferences(xmlSchemaElementPtr elemDecl,
+ 	    * declaration `resolved` to by the `actual value`
+ 	    * of the substitutionGroup [attribute], if present"
+ 	    */
+-	    if (elemDecl->subtypes == NULL)
+-		elemDecl->subtypes = substHead->subtypes;
++	    if (elemDecl->subtypes == NULL) {
++                if (substHead->subtypes == NULL) {
++                    /*
++                     * This can happen with self-referencing substitution
++                     * groups. The cycle will be detected later, but we have
++                     * to set subtypes to avoid null-pointer dereferences.
++                     */
++	            elemDecl->subtypes = xmlSchemaGetBuiltInType(
++                            XML_SCHEMAS_ANYTYPE);
++                } else {
++		    elemDecl->subtypes = substHead->subtypes;
++                }
++            }
+ 	}
+     }
+     /*
+-- 
+GitLab
+

SOURCES/libxml2-2.9.13-CVE-2023-28484.patch

@@ -0,0 +1,74 @@
+From 647e072ea0a2f12687fa05c172f4c4713fdb0c4f Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 7 Apr 2023 11:46:35 +0200
+Subject: [PATCH] [CVE-2023-28484] Fix null deref in xmlSchemaFixupComplexType
+
+Fix a null pointer dereference when parsing (invalid) XML schemas.
+
+Thanks to Robby Simpson for the report!
+
+Fixes #491.
+---
+ result/schemas/issue491_0_0.err |  1 +
+ test/schemas/issue491_0.xml     |  1 +
+ test/schemas/issue491_0.xsd     | 18 ++++++++++++++++++
+ xmlschemas.c                    |  2 +-
+ 4 files changed, 21 insertions(+), 1 deletion(-)
+ create mode 100644 result/schemas/issue491_0_0.err
+ create mode 100644 test/schemas/issue491_0.xml
+ create mode 100644 test/schemas/issue491_0.xsd
+
+diff --git a/result/schemas/issue491_0_0.err b/result/schemas/issue491_0_0.err
+new file mode 100644
+index 00000000..9b2bb969
+--- /dev/null
++++ b/result/schemas/issue491_0_0.err
+@@ -0,0 +1 @@
++./test/schemas/issue491_0.xsd:8: element complexType: Schemas parser error : complex type 'ChildType': The content type of both, the type and its base type, must either 'mixed' or 'element-only'.
+diff --git a/test/schemas/issue491_0.xml b/test/schemas/issue491_0.xml
+new file mode 100644
+index 00000000..e2b2fc2e
+--- /dev/null
++++ b/test/schemas/issue491_0.xml
+@@ -0,0 +1 @@
++<Child xmlns="http://www.test.com">5</Child>
+diff --git a/test/schemas/issue491_0.xsd b/test/schemas/issue491_0.xsd
+new file mode 100644
+index 00000000..81702649
+--- /dev/null
++++ b/test/schemas/issue491_0.xsd
+@@ -0,0 +1,18 @@
++<?xml version='1.0' encoding='UTF-8'?>
++<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://www.test.com" targetNamespace="http://www.test.com" elementFormDefault="qualified" attributeFormDefault="unqualified">
++  <xs:complexType name="BaseType">
++    <xs:simpleContent>
++      <xs:extension base="xs:int" />
++    </xs:simpleContent>
++  </xs:complexType>
++  <xs:complexType name="ChildType">
++    <xs:complexContent>
++      <xs:extension base="BaseType">
++        <xs:sequence>
++          <xs:element name="bad" type="xs:int" minOccurs="0" maxOccurs="1"/>
++        </xs:sequence>
++      </xs:extension>
++    </xs:complexContent>
++  </xs:complexType>
++  <xs:element name="Child" type="ChildType" />
++</xs:schema>
+diff --git a/xmlschemas.c b/xmlschemas.c
+index 152b7c3f..eec24a95 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -18619,7 +18619,7 @@ xmlSchemaFixupComplexType(xmlSchemaParserCtxtPtr pctxt,
+ 			"allowed to appear inside other model groups",
+ 			NULL, NULL);
+ 
+-		} else if (! dummySequence) {
++		} else if ((!dummySequence) && (baseType->subtypes != NULL)) {
+ 		    xmlSchemaTreeItemPtr effectiveContent =
+ 			(xmlSchemaTreeItemPtr) type->subtypes;
+ 		    /*
+-- 
+GitLab
+

SOURCES/libxml2-2.9.13-CVE-2024-56171.patch

@@ -0,0 +1,41 @@
+From 245b70d7d2768572ae1b05b3668ca858b9ec4ed4 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 10 Dec 2024 16:52:05 +0100
+Subject: [PATCH] [CVE-2024-56171] Fix use-after-free after
+ xmlSchemaItemListAdd
+
+xmlSchemaItemListAdd can reallocate the items array. Update local
+variables after adding item in
+
+- xmlSchemaIDCFillNodeTables
+- xmlSchemaBubbleIDCNodeTables
+
+Fixes #828.
+---
+ xmlschemas.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/xmlschemas.c b/xmlschemas.c
+index d276faf10..28b14bd44 100644
+--- a/xmlschemas.c
++++ b/xmlschemas.c
+@@ -23388,6 +23388,7 @@ xmlSchemaIDCFillNodeTables(xmlSchemaValidCtxtPtr vctxt,
+ 			}
+ 			if (xmlSchemaItemListAdd(bind->dupls, bind->nodeTable[j]) == -1)
+ 			    goto internal_error;
++                        dupls = (xmlSchemaPSVIIDCNodePtr *) bind->dupls->items;
+ 			/*
+ 			* Remove the duplicate entry from the IDC node-table.
+ 			*/
+@@ -23604,6 +23605,8 @@ xmlSchemaBubbleIDCNodeTables(xmlSchemaValidCtxtPtr vctxt)
+ 				goto internal_error;
+ 			}
+ 			xmlSchemaItemListAdd(parBind->dupls, parNode);
++		        dupls = (xmlSchemaPSVIIDCNodePtr *)
++                            parBind->dupls->items;
+ 		    } else {
+ 			/*
+ 			* Add the node-table entry (node and key-sequence) of
+-- 
+GitLab
+

SOURCES/libxml2-2.9.13-CVE-2025-24928.patch

@@ -0,0 +1,57 @@
+From 858ca26c0689161a6b903a6682cc8a1cc10a0ea8 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 11 Feb 2025 17:30:40 +0100
+Subject: [PATCH] [CVE-2025-24928] Fix stack-buffer-overflow in
+ xmlSnprintfElements
+
+Fixes #847.
+---
+ valid.c | 25 +++++++++++++------------
+ 1 file changed, 13 insertions(+), 12 deletions(-)
+
+diff --git a/valid.c b/valid.c
+index 76d657d62..abefdc50a 100644
+--- a/valid.c
++++ b/valid.c
+@@ -5057,25 +5057,26 @@ xmlSnprintfElements(char *buf, int size, xmlNodePtr node, int glob) {
+ 	    return;
+ 	}
+         switch (cur->type) {
+-            case XML_ELEMENT_NODE:
++            case XML_ELEMENT_NODE: {
++                int qnameLen = xmlStrlen(cur->name);
++
++                if ((cur->ns != NULL) && (cur->ns->prefix != NULL))
++                    qnameLen += xmlStrlen(cur->ns->prefix) + 1;
++                if (size - len < qnameLen + 10) {
++                    if ((size - len > 4) && (buf[len - 1] != '.'))
++                        strcat(buf, " ...");
++                    return;
++                }
+ 		if ((cur->ns != NULL) && (cur->ns->prefix != NULL)) {
+-		    if (size - len < xmlStrlen(cur->ns->prefix) + 10) {
+-			if ((size - len > 4) && (buf[len - 1] != '.'))
+-			    strcat(buf, " ...");
+-			return;
+-		    }
+ 		    strcat(buf, (char *) cur->ns->prefix);
+ 		    strcat(buf, ":");
+ 		}
+-                if (size - len < xmlStrlen(cur->name) + 10) {
+-		    if ((size - len > 4) && (buf[len - 1] != '.'))
+-			strcat(buf, " ...");
+-		    return;
+-		}
+-	        strcat(buf, (char *) cur->name);
++                if (cur->name != NULL)
++	            strcat(buf, (char *) cur->name);
+ 		if (cur->next != NULL)
+ 		    strcat(buf, " ");
+ 		break;
++            }
+             case XML_TEXT_NODE:
+ 		if (xmlIsBlankNode(cur))
+ 		    break;
+-- 
+GitLab
+

SOURCES/libxml2-2.9.7-CVE-2016-3709.patch

@@ -0,0 +1,88 @@
+From c1ba6f54d32b707ca6d91cb3257ce9de82876b6f Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Sat, 15 Aug 2020 18:32:29 +0200
+Subject: [PATCH] Revert "Do not URI escape in server side includes"
+
+This reverts commit 960f0e275616cadc29671a218d7fb9b69eb35588.
+
+This commit introduced
+
+- an infinite loop, found by OSS-Fuzz, which could be easily fixed.
+- an algorithm with quadratic runtime
+- a security issue, see
+  https://bugzilla.gnome.org/show_bug.cgi?id=769760
+
+A better approach is to add an option not to escape URLs at all
+which libxml2 should have possibly done in the first place.
+---
+ HTMLtree.c | 49 +++++++++++--------------------------------------
+ 1 file changed, 11 insertions(+), 38 deletions(-)
+
+diff --git a/HTMLtree.c b/HTMLtree.c
+index 8d236bb3..cdb7f86a 100644
+--- a/HTMLtree.c
++++ b/HTMLtree.c
+@@ -706,49 +706,22 @@ htmlAttrDumpOutput(xmlOutputBufferPtr buf, xmlDocPtr doc, xmlAttrPtr cur,
+ 		 (!xmlStrcasecmp(cur->name, BAD_CAST "src")) ||
+ 		 ((!xmlStrcasecmp(cur->name, BAD_CAST "name")) &&
+ 		  (!xmlStrcasecmp(cur->parent->name, BAD_CAST "a"))))) {
++		xmlChar *escaped;
+ 		xmlChar *tmp = value;
+-		/* xmlURIEscapeStr() escapes '"' so it can be safely used. */
+-		xmlBufCCat(buf->buffer, "\"");
+ 
+ 		while (IS_BLANK_CH(*tmp)) tmp++;
+ 
+-		/* URI Escape everything, except server side includes. */
+-		for ( ; ; ) {
+-		    xmlChar *escaped;
+-		    xmlChar endChar;
+-		    xmlChar *end = NULL;
+-		    xmlChar *start = (xmlChar *)xmlStrstr(tmp, BAD_CAST "<!--");
+-		    if (start != NULL) {
+-			end = (xmlChar *)xmlStrstr(tmp, BAD_CAST "-->");
+-			if (end != NULL) {
+-			    *start = '\0';
+-			}
+-		    }
+-
+-		    /* Escape the whole string, or until start (set to '\0'). */
+-		    escaped = xmlURIEscapeStr(tmp, BAD_CAST"@/:=?;#%&,+");
+-		    if (escaped != NULL) {
+-		        xmlBufCat(buf->buffer, escaped);
+-		        xmlFree(escaped);
+-		    } else {
+-		        xmlBufCat(buf->buffer, tmp);
+-		    }
+-
+-		    if (end == NULL) { /* Everything has been written. */
+-			break;
+-		    }
+-
+-		    /* Do not escape anything within server side includes. */
+-		    *start = '<'; /* Restore the first character of "<!--". */
+-		    end += 3; /* strlen("-->") */
+-		    endChar = *end;
+-		    *end = '\0';
+-		    xmlBufCat(buf->buffer, start);
+-		    *end = endChar;
+-		    tmp = end;
++		/*
++		 * the < and > have already been escaped at the entity level
++		 * And doing so here breaks server side includes
++		 */
++		escaped = xmlURIEscapeStr(tmp, BAD_CAST"@/:=?;#%&,+<>");
++		if (escaped != NULL) {
++		    xmlBufWriteQuotedString(buf->buffer, escaped);
++		    xmlFree(escaped);
++		} else {
++		    xmlBufWriteQuotedString(buf->buffer, value);
+ 		}
+-
+-		xmlBufCCat(buf->buffer, "\"");
+ 	    } else {
+ 		xmlBufWriteQuotedString(buf->buffer, value);
+ 	    }
+-- 
+GitLab
+

SOURCES/libxml2-2.9.7-CVE-2022-29824.patch

@@ -0,0 +1,341 @@
+From d410ac5b7ef6ecf1254606408d55f98547c22bda Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Tue, 8 Mar 2022 20:10:02 +0100
+Subject: [PATCH] [CVE-2022-29824] Fix integer overflows in xmlBuf and
+ xmlBuffer
+
+In several places, the code handling string buffers didn't check for
+integer overflow or used wrong types for buffer sizes. This could
+result in out-of-bounds writes or other memory errors when working on
+large, multi-gigabyte buffers.
+
+Thanks to Felix Wilhelm for the report.
+---
+ buf.c  | 86 +++++++++++++++++++++++-----------------------------------
+ tree.c | 72 ++++++++++++++++++------------------------------
+ 2 files changed, 61 insertions(+), 97 deletions(-)
+
+diff --git a/buf.c b/buf.c
+index 21cb9d80..f861d79b 100644
+--- a/buf.c
++++ b/buf.c
+@@ -30,6 +30,10 @@
+ #include <libxml/parserInternals.h> /* for XML_MAX_TEXT_LENGTH */
+ #include "buf.h"
+ 
++#ifndef SIZE_MAX
++#define SIZE_MAX ((size_t) -1)
++#endif
++
+ #define WITH_BUFFER_COMPAT
+ 
+ /**
+@@ -156,6 +160,8 @@ xmlBufPtr
+ xmlBufCreateSize(size_t size) {
+     xmlBufPtr ret;
+ 
++    if (size == SIZE_MAX)
++        return(NULL);
+     ret = (xmlBufPtr) xmlMalloc(sizeof(xmlBuf));
+     if (ret == NULL) {
+ 	xmlBufMemoryError(NULL, "creating buffer");
+@@ -166,8 +172,8 @@ xmlBufCreateSize(size_t size) {
+     ret->error = 0;
+     ret->buffer = NULL;
+     ret->alloc = xmlBufferAllocScheme;
+-    ret->size = (size ? size+2 : 0);         /* +1 for ending null */
+-    ret->compat_size = (int) ret->size;
++    ret->size = (size ? size + 1 : 0);         /* +1 for ending null */
++    ret->compat_size = (ret->size > INT_MAX ? INT_MAX : ret->size);
+     if (ret->size){
+         ret->content = (xmlChar *) xmlMallocAtomic(ret->size * sizeof(xmlChar));
+         if (ret->content == NULL) {
+@@ -442,23 +448,17 @@ xmlBufGrowInternal(xmlBufPtr buf, size_t len) {
+     CHECK_COMPAT(buf)
+ 
+     if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
+-    if (buf->use + len < buf->size)
++    if (len < buf->size - buf->use)
+         return(buf->size - buf->use);
++    if (len > SIZE_MAX - buf->use)
++        return(0);
+ 
+-    /*
+-     * Windows has a BIG problem on realloc timing, so we try to double
+-     * the buffer size (if that's enough) (bug 146697)
+-     * Apparently BSD too, and it's probably best for linux too
+-     * On an embedded system this may be something to change
+-     */
+-#if 1
+-    if (buf->size > (size_t) len)
+-        size = buf->size * 2;
+-    else
+-        size = buf->use + len + 100;
+-#else
+-    size = buf->use + len + 100;
+-#endif
++    if (buf->size > (size_t) len) {
++        size = buf->size > SIZE_MAX / 2 ? SIZE_MAX : buf->size * 2;
++    } else {
++        size = buf->use + len;
++        size = size > SIZE_MAX - 100 ? SIZE_MAX : size + 100;
++    }
+ 
+     if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
+         /*
+@@ -744,7 +744,7 @@ xmlBufIsEmpty(const xmlBufPtr buf)
+ int
+ xmlBufResize(xmlBufPtr buf, size_t size)
+ {
+-    unsigned int newSize;
++    size_t newSize;
+     xmlChar* rebuf = NULL;
+     size_t start_buf;
+ 
+@@ -772,9 +772,13 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+ 	case XML_BUFFER_ALLOC_IO:
+ 	case XML_BUFFER_ALLOC_DOUBLEIT:
+ 	    /*take care of empty case*/
+-	    newSize = (buf->size ? buf->size*2 : size + 10);
++            if (buf->size == 0) {
++                newSize = (size > SIZE_MAX - 10 ? SIZE_MAX : size + 10);
++            } else {
++                newSize = buf->size;
++            }
+ 	    while (size > newSize) {
+-	        if (newSize > UINT_MAX / 2) {
++	        if (newSize > SIZE_MAX / 2) {
+ 	            xmlBufMemoryError(buf, "growing buffer");
+ 	            return 0;
+ 	        }
+@@ -782,15 +786,15 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+ 	    }
+ 	    break;
+ 	case XML_BUFFER_ALLOC_EXACT:
+-	    newSize = size+10;
++            newSize = (size > SIZE_MAX - 10 ? SIZE_MAX : size + 10);
+ 	    break;
+         case XML_BUFFER_ALLOC_HYBRID:
+             if (buf->use < BASE_BUFFER_SIZE)
+                 newSize = size;
+             else {
+-                newSize = buf->size * 2;
++                newSize = buf->size;
+                 while (size > newSize) {
+-                    if (newSize > UINT_MAX / 2) {
++                    if (newSize > SIZE_MAX / 2) {
+                         xmlBufMemoryError(buf, "growing buffer");
+                         return 0;
+                     }
+@@ -800,7 +804,7 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+             break;
+ 
+ 	default:
+-	    newSize = size+10;
++            newSize = (size > SIZE_MAX - 10 ? SIZE_MAX : size + 10);
+ 	    break;
+     }
+ 
+@@ -866,7 +870,7 @@ xmlBufResize(xmlBufPtr buf, size_t size)
+  */
+ int
+ xmlBufAdd(xmlBufPtr buf, const xmlChar *str, int len) {
+-    unsigned int needSize;
++    size_t needSize;
+ 
+     if ((str == NULL) || (buf == NULL) || (buf->error))
+ 	return -1;
+@@ -888,8 +892,10 @@ xmlBufAdd(xmlBufPtr buf, const xmlChar *str, int len) {
+     if (len < 0) return -1;
+     if (len == 0) return 0;
+ 
+-    needSize = buf->use + len + 2;
+-    if (needSize > buf->size){
++    if ((size_t) len >= buf->size - buf->use) {
++        if ((size_t) len >= SIZE_MAX - buf->use)
++            return(-1);
++        needSize = buf->use + len + 1;
+ 	if (buf->alloc == XML_BUFFER_ALLOC_BOUNDED) {
+ 	    /*
+ 	     * Used to provide parsing limits
+@@ -1025,31 +1031,7 @@ xmlBufCat(xmlBufPtr buf, const xmlChar *str) {
+  */
+ int
+ xmlBufCCat(xmlBufPtr buf, const char *str) {
+-    const char *cur;
+-
+-    if ((buf == NULL) || (buf->error))
+-        return(-1);
+-    CHECK_COMPAT(buf)
+-    if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return -1;
+-    if (str == NULL) {
+-#ifdef DEBUG_BUFFER
+-        xmlGenericError(xmlGenericErrorContext,
+-		"xmlBufCCat: str == NULL\n");
+-#endif
+-	return -1;
+-    }
+-    for (cur = str;*cur != 0;cur++) {
+-        if (buf->use  + 10 >= buf->size) {
+-            if (!xmlBufResize(buf, buf->use+10)){
+-		xmlBufMemoryError(buf, "growing buffer");
+-                return XML_ERR_NO_MEMORY;
+-            }
+-        }
+-        buf->content[buf->use++] = *cur;
+-    }
+-    buf->content[buf->use] = 0;
+-    UPDATE_COMPAT(buf)
+-    return 0;
++    return xmlBufCat(buf, (const xmlChar *) str);
+ }
+ 
+ /**
+diff --git a/tree.c b/tree.c
+index 86a8da79..fc75f962 100644
+--- a/tree.c
++++ b/tree.c
+@@ -7049,6 +7049,8 @@ xmlBufferPtr
+ xmlBufferCreateSize(size_t size) {
+     xmlBufferPtr ret;
+ 
++    if (size >= UINT_MAX)
++        return(NULL);
+     ret = (xmlBufferPtr) xmlMalloc(sizeof(xmlBuffer));
+     if (ret == NULL) {
+ 	xmlTreeErrMemory("creating buffer");
+@@ -7056,7 +7058,7 @@ xmlBufferCreateSize(size_t size) {
+     }
+     ret->use = 0;
+     ret->alloc = xmlBufferAllocScheme;
+-    ret->size = (size ? size+2 : 0);         /* +1 for ending null */
++    ret->size = (size ? size + 1 : 0);         /* +1 for ending null */
+     if (ret->size){
+         ret->content = (xmlChar *) xmlMallocAtomic(ret->size * sizeof(xmlChar));
+         if (ret->content == NULL) {
+@@ -7116,6 +7118,8 @@ xmlBufferCreateStatic(void *mem, size_t size) {
+ 
+     if ((mem == NULL) || (size == 0))
+         return(NULL);
++    if (size > UINT_MAX)
++        return(NULL);
+ 
+     ret = (xmlBufferPtr) xmlMalloc(sizeof(xmlBuffer));
+     if (ret == NULL) {
+@@ -7263,28 +7267,23 @@ xmlBufferShrink(xmlBufferPtr buf, unsigned int len) {
+  */
+ int
+ xmlBufferGrow(xmlBufferPtr buf, unsigned int len) {
+-    int size;
++    unsigned int size;
+     xmlChar *newbuf;
+ 
+     if (buf == NULL) return(-1);
+ 
+     if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return(0);
+-    if (len + buf->use < buf->size) return(0);
++    if (len < buf->size - buf->use)
++        return(0);
++    if (len > UINT_MAX - buf->use)
++        return(-1);
+ 
+-    /*
+-     * Windows has a BIG problem on realloc timing, so we try to double
+-     * the buffer size (if that's enough) (bug 146697)
+-     * Apparently BSD too, and it's probably best for linux too
+-     * On an embedded system this may be something to change
+-     */
+-#if 1
+-    if (buf->size > len)
+-        size = buf->size * 2;
+-    else
+-        size = buf->use + len + 100;
+-#else
+-    size = buf->use + len + 100;
+-#endif
++    if (buf->size > (size_t) len) {
++        size = buf->size > UINT_MAX / 2 ? UINT_MAX : buf->size * 2;
++    } else {
++        size = buf->use + len;
++        size = size > UINT_MAX - 100 ? UINT_MAX : size + 100;
++    }
+ 
+     if ((buf->alloc == XML_BUFFER_ALLOC_IO) && (buf->contentIO != NULL)) {
+         size_t start_buf = buf->content - buf->contentIO;
+@@ -7406,7 +7405,10 @@ xmlBufferResize(xmlBufferPtr buf, unsigned int size)
+ 	case XML_BUFFER_ALLOC_IO:
+ 	case XML_BUFFER_ALLOC_DOUBLEIT:
+ 	    /*take care of empty case*/
+-	    newSize = (buf->size ? buf->size*2 : size + 10);
++            if (buf->size == 0)
++                newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);
++            else
++                newSize = buf->size;
+ 	    while (size > newSize) {
+ 	        if (newSize > UINT_MAX / 2) {
+ 	            xmlTreeErrMemory("growing buffer");
+@@ -7416,7 +7418,7 @@ xmlBufferResize(xmlBufferPtr buf, unsigned int size)
+ 	    }
+ 	    break;
+ 	case XML_BUFFER_ALLOC_EXACT:
+-	    newSize = size+10;
++	    newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);;
+ 	    break;
+         case XML_BUFFER_ALLOC_HYBRID:
+             if (buf->use < BASE_BUFFER_SIZE)
+@@ -7434,7 +7436,7 @@ xmlBufferResize(xmlBufferPtr buf, unsigned int size)
+             break;
+ 
+ 	default:
+-	    newSize = size+10;
++	    newSize = (size > UINT_MAX - 10 ? UINT_MAX : size + 10);;
+ 	    break;
+     }
+ 
+@@ -7520,8 +7522,10 @@ xmlBufferAdd(xmlBufferPtr buf, const xmlChar *str, int len) {
+     if (len < 0) return -1;
+     if (len == 0) return 0;
+ 
+-    needSize = buf->use + len + 2;
+-    if (needSize > buf->size){
++    if ((unsigned) len >= buf->size - buf->use) {
++        if ((unsigned) len >= UINT_MAX - buf->use)
++            return XML_ERR_NO_MEMORY;
++        needSize = buf->use + len + 1;
+         if (!xmlBufferResize(buf, needSize)){
+ 	    xmlTreeErrMemory("growing buffer");
+             return XML_ERR_NO_MEMORY;
+@@ -7634,29 +7638,7 @@ xmlBufferCat(xmlBufferPtr buf, const xmlChar *str) {
+  */
+ int
+ xmlBufferCCat(xmlBufferPtr buf, const char *str) {
+-    const char *cur;
+-
+-    if (buf == NULL)
+-        return(-1);
+-    if (buf->alloc == XML_BUFFER_ALLOC_IMMUTABLE) return -1;
+-    if (str == NULL) {
+-#ifdef DEBUG_BUFFER
+-        xmlGenericError(xmlGenericErrorContext,
+-		"xmlBufferCCat: str == NULL\n");
+-#endif
+-	return -1;
+-    }
+-    for (cur = str;*cur != 0;cur++) {
+-        if (buf->use  + 10 >= buf->size) {
+-            if (!xmlBufferResize(buf, buf->use+10)){
+-		xmlTreeErrMemory("growing buffer");
+-                return XML_ERR_NO_MEMORY;
+-            }
+-        }
+-        buf->content[buf->use++] = *cur;
+-    }
+-    buf->content[buf->use] = 0;
+-    return 0;
++    return xmlBufferCat(buf, (const xmlChar *) str);
+ }
+ 
+ /**
+-- 
+2.36.1
+

SOURCES/libxml2-2.9.7-CVE-2022-40303.patch

@@ -0,0 +1,600 @@
+From 7afb666b26cfb17689e5da98bed610a417083f9d Mon Sep 17 00:00:00 2001
+From: David King <amigadave@amigadave.com>
+Date: Tue, 3 Jan 2023 09:57:28 +0000
+Subject: [PATCH 1/2] Fix CVE-2022-40303
+
+Adapted from https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0
+---
+ parser.c | 232 +++++++++++++++++++++++++++++--------------------------
+ 1 file changed, 121 insertions(+), 111 deletions(-)
+
+diff --git a/parser.c b/parser.c
+index 1c5e036e..e66e4196 100644
+--- a/parser.c
++++ b/parser.c
+@@ -108,6 +108,8 @@ static void xmlHaltParser(xmlParserCtxtPtr ctxt);
+  *									*
+  ************************************************************************/
+ 
++#define XML_MAX_HUGE_LENGTH 1000000000
++
+ #define XML_PARSER_BIG_ENTITY 1000
+ #define XML_PARSER_LOT_ENTITY 5000
+ 
+@@ -532,7 +534,7 @@ xmlFatalErr(xmlParserCtxtPtr ctxt, xmlParserErrors error, const char *info)
+             errmsg = "Malformed declaration expecting version";
+             break;
+         case XML_ERR_NAME_TOO_LONG:
+-            errmsg = "Name too long use XML_PARSE_HUGE option";
++            errmsg = "Name too long";
+             break;
+ #if 0
+         case:
+@@ -3150,6 +3152,9 @@ xmlParseNameComplex(xmlParserCtxtPtr ctxt) {
+     int len = 0, l;
+     int c;
+     int count = 0;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+ 
+ #ifdef DEBUG
+     nbParseNameComplex++;
+@@ -3241,13 +3246,13 @@ xmlParseNameComplex(xmlParserCtxtPtr ctxt) {
+                 if (ctxt->instate == XML_PARSER_EOF)
+                     return(NULL);
+ 	    }
+-	    len += l;
++            if (len <= INT_MAX - l)
++	        len += l;
+ 	    NEXTL(l);
+ 	    c = CUR_CHAR(l);
+ 	}
+     }
+-    if ((len > XML_MAX_NAME_LENGTH) &&
+-        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++    if (len > maxLength) {
+         xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
+         return(NULL);
+     }
+@@ -3286,7 +3291,10 @@ const xmlChar *
+ xmlParseName(xmlParserCtxtPtr ctxt) {
+     const xmlChar *in;
+     const xmlChar *ret;
+-    int count = 0;
++    size_t count = 0;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_TEXT_LENGTH :
++                       XML_MAX_NAME_LENGTH;
+ 
+     GROW;
+ 
+@@ -3310,8 +3318,7 @@ xmlParseName(xmlParserCtxtPtr ctxt) {
+ 	    in++;
+ 	if ((*in > 0) && (*in < 0x80)) {
+ 	    count = in - ctxt->input->cur;
+-            if ((count > XML_MAX_NAME_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++            if (count > maxLength) {
+                 xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name");
+                 return(NULL);
+             }
+@@ -3333,6 +3340,9 @@ xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) {
+     int len = 0, l;
+     int c;
+     int count = 0;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+     size_t startPosition = 0;
+ 
+ #ifdef DEBUG
+@@ -3353,17 +3363,13 @@ xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) {
+     while ((c != ' ') && (c != '>') && (c != '/') && /* test bigname.xml */
+ 	   (xmlIsNameChar(ctxt, c) && (c != ':'))) {
+ 	if (count++ > XML_PARSER_CHUNK_SIZE) {
+-            if ((len > XML_MAX_NAME_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
+-                return(NULL);
+-            }
+ 	    count = 0;
+ 	    GROW;
+             if (ctxt->instate == XML_PARSER_EOF)
+                 return(NULL);
+ 	}
+-	len += l;
++        if (len <= INT_MAX - l)
++	    len += l;
+ 	NEXTL(l);
+ 	c = CUR_CHAR(l);
+ 	if (c == 0) {
+@@ -3381,8 +3387,7 @@ xmlParseNCNameComplex(xmlParserCtxtPtr ctxt) {
+ 	    c = CUR_CHAR(l);
+ 	}
+     }
+-    if ((len > XML_MAX_NAME_LENGTH) &&
+-        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++    if (len > maxLength) {
+         xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
+         return(NULL);
+     }
+@@ -3408,7 +3413,10 @@ static const xmlChar *
+ xmlParseNCName(xmlParserCtxtPtr ctxt) {
+     const xmlChar *in, *e;
+     const xmlChar *ret;
+-    int count = 0;
++    size_t count = 0;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_TEXT_LENGTH :
++                       XML_MAX_NAME_LENGTH;
+ 
+ #ifdef DEBUG
+     nbParseNCName++;
+@@ -3433,8 +3441,7 @@ xmlParseNCName(xmlParserCtxtPtr ctxt) {
+ 	    goto complex;
+ 	if ((*in > 0) && (*in < 0x80)) {
+ 	    count = in - ctxt->input->cur;
+-            if ((count > XML_MAX_NAME_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++            if (count > maxLength) {
+                 xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
+                 return(NULL);
+             }
+@@ -3517,6 +3524,9 @@ xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
+     const xmlChar *cur = *str;
+     int len = 0, l;
+     int c;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+ 
+ #ifdef DEBUG
+     nbParseStringName++;
+@@ -3552,12 +3562,6 @@ xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
+ 		if (len + 10 > max) {
+ 		    xmlChar *tmp;
+ 
+-                    if ((len > XML_MAX_NAME_LENGTH) &&
+-                        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
+-			xmlFree(buffer);
+-                        return(NULL);
+-                    }
+ 		    max *= 2;
+ 		    tmp = (xmlChar *) xmlRealloc(buffer,
+ 			                            max * sizeof(xmlChar));
+@@ -3571,14 +3575,18 @@ xmlParseStringName(xmlParserCtxtPtr ctxt, const xmlChar** str) {
+ 		COPY_BUF(l,buffer,len,c);
+ 		cur += l;
+ 		c = CUR_SCHAR(cur, l);
++                if (len > maxLength) {
++                    xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
++                    xmlFree(buffer);
++                    return(NULL);
++                }
+ 	    }
+ 	    buffer[len] = 0;
+ 	    *str = cur;
+ 	    return(buffer);
+ 	}
+     }
+-    if ((len > XML_MAX_NAME_LENGTH) &&
+-        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++    if (len > maxLength) {
+         xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NCName");
+         return(NULL);
+     }
+@@ -3605,6 +3613,9 @@ xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
+     int len = 0, l;
+     int c;
+     int count = 0;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+ 
+ #ifdef DEBUG
+     nbParseNmToken++;
+@@ -3656,12 +3667,6 @@ xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
+ 		if (len + 10 > max) {
+ 		    xmlChar *tmp;
+ 
+-                    if ((max > XML_MAX_NAME_LENGTH) &&
+-                        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                        xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
+-                        xmlFree(buffer);
+-                        return(NULL);
+-                    }
+ 		    max *= 2;
+ 		    tmp = (xmlChar *) xmlRealloc(buffer,
+ 			                            max * sizeof(xmlChar));
+@@ -3675,6 +3680,11 @@ xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
+ 		COPY_BUF(l,buffer,len,c);
+ 		NEXTL(l);
+ 		c = CUR_CHAR(l);
++                if (len > maxLength) {
++                    xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
++                    xmlFree(buffer);
++                    return(NULL);
++                }
+ 	    }
+ 	    buffer[len] = 0;
+ 	    return(buffer);
+@@ -3682,8 +3692,7 @@ xmlParseNmtoken(xmlParserCtxtPtr ctxt) {
+     }
+     if (len == 0)
+         return(NULL);
+-    if ((len > XML_MAX_NAME_LENGTH) &&
+-        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++    if (len > maxLength) {
+         xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "NmToken");
+         return(NULL);
+     }
+@@ -3709,6 +3718,9 @@ xmlParseEntityValue(xmlParserCtxtPtr ctxt, xmlChar **orig) {
+     int len = 0;
+     int size = XML_PARSER_BUFFER_SIZE;
+     int c, l;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_HUGE_LENGTH :
++                    XML_MAX_TEXT_LENGTH;
+     xmlChar stop;
+     xmlChar *ret = NULL;
+     const xmlChar *cur = NULL;
+@@ -3768,6 +3780,14 @@ xmlParseEntityValue(xmlParserCtxtPtr ctxt, xmlChar **orig) {
+ 	    GROW;
+ 	    c = CUR_CHAR(l);
+ 	}
++
++        if (len > maxLength) {
++            xmlFatalErrMsg(ctxt, XML_ERR_ENTITY_NOT_FINISHED,
++                           "entity value too long\n");
++        if (buf != NULL)
++            xmlFree(buf);
++        return(ret);
++        }
+     }
+     buf[len] = 0;
+     if (ctxt->instate == XML_PARSER_EOF)
+@@ -3855,6 +3875,9 @@ xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
+     xmlChar *rep = NULL;
+     size_t len = 0;
+     size_t buf_size = 0;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_HUGE_LENGTH :
++                       XML_MAX_TEXT_LENGTH;
+     int c, l, in_space = 0;
+     xmlChar *current = NULL;
+     xmlEntityPtr ent;
+@@ -3886,16 +3909,6 @@ xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
+     while (((NXT(0) != limit) && /* checked */
+             (IS_CHAR(c)) && (c != '<')) &&
+             (ctxt->instate != XML_PARSER_EOF)) {
+-        /*
+-         * Impose a reasonable limit on attribute size, unless XML_PARSE_HUGE
+-         * special option is given
+-         */
+-        if ((len > XML_MAX_TEXT_LENGTH) &&
+-            ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-            xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+-                           "AttValue length too long\n");
+-            goto mem_error;
+-        }
+ 	if (c == 0) break;
+ 	if (c == '&') {
+ 	    in_space = 0;
+@@ -4041,6 +4054,11 @@ xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
+ 	}
+ 	GROW;
+ 	c = CUR_CHAR(l);
++        if (len > maxLength) {
++            xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
++                           "AttValue length too long\n");
++            goto mem_error;
++        }
+     }
+     if (ctxt->instate == XML_PARSER_EOF)
+         goto error;
+@@ -4062,16 +4080,6 @@ xmlParseAttValueComplex(xmlParserCtxtPtr ctxt, int *attlen, int normalize) {
+     } else
+ 	NEXT;
+ 
+-    /*
+-     * There we potentially risk an overflow, don't allow attribute value of
+-     * length more than INT_MAX it is a very reasonnable assumption !
+-     */
+-    if (len >= INT_MAX) {
+-        xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+-                       "AttValue length too long\n");
+-        goto mem_error;
+-    }
+-
+     if (attlen != NULL) *attlen = (int) len;
+     return(buf);
+ 
+@@ -4142,6 +4150,9 @@ xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) {
+     int len = 0;
+     int size = XML_PARSER_BUFFER_SIZE;
+     int cur, l;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+     xmlChar stop;
+     int state = ctxt->instate;
+     int count = 0;
+@@ -4169,13 +4180,6 @@ xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) {
+ 	if (len + 5 >= size) {
+ 	    xmlChar *tmp;
+ 
+-            if ((size > XML_MAX_NAME_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "SystemLiteral");
+-                xmlFree(buf);
+-		ctxt->instate = (xmlParserInputState) state;
+-                return(NULL);
+-            }
+ 	    size *= 2;
+ 	    tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
+ 	    if (tmp == NULL) {
+@@ -4203,6 +4207,12 @@ xmlParseSystemLiteral(xmlParserCtxtPtr ctxt) {
+ 	    SHRINK;
+ 	    cur = CUR_CHAR(l);
+ 	}
++        if (len > maxLength) {
++            xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "SystemLiteral");
++            xmlFree(buf);
++            ctxt->instate = (xmlParserInputState) state;
++            return(NULL);
++        }
+     }
+     buf[len] = 0;
+     ctxt->instate = (xmlParserInputState) state;
+@@ -4230,6 +4240,9 @@ xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
+     xmlChar *buf = NULL;
+     int len = 0;
+     int size = XML_PARSER_BUFFER_SIZE;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_TEXT_LENGTH :
++                    XML_MAX_NAME_LENGTH;
+     xmlChar cur;
+     xmlChar stop;
+     int count = 0;
+@@ -4257,12 +4270,6 @@ xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
+ 	if (len + 1 >= size) {
+ 	    xmlChar *tmp;
+ 
+-            if ((size > XML_MAX_NAME_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Public ID");
+-                xmlFree(buf);
+-                return(NULL);
+-            }
+ 	    size *= 2;
+ 	    tmp = (xmlChar *) xmlRealloc(buf, size * sizeof(xmlChar));
+ 	    if (tmp == NULL) {
+@@ -4289,6 +4296,11 @@ xmlParsePubidLiteral(xmlParserCtxtPtr ctxt) {
+ 	    SHRINK;
+ 	    cur = CUR;
+ 	}
++        if (len > maxLength) {
++            xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Public ID");
++            xmlFree(buf);
++            return(NULL);
++        }
+     }
+     buf[len] = 0;
+     if (cur != stop) {
+@@ -4686,6 +4698,9 @@ xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf,
+     int r, rl;
+     int cur, l;
+     size_t count = 0;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_HUGE_LENGTH :
++                       XML_MAX_TEXT_LENGTH;
+     int inputid;
+ 
+     inputid = ctxt->input->id;
+@@ -4731,13 +4746,6 @@ xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf,
+ 	if ((r == '-') && (q == '-')) {
+ 	    xmlFatalErr(ctxt, XML_ERR_HYPHEN_IN_COMMENT, NULL);
+ 	}
+-        if ((len > XML_MAX_TEXT_LENGTH) &&
+-            ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-            xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
+-                         "Comment too big found", NULL);
+-            xmlFree (buf);
+-            return;
+-        }
+ 	if (len + 5 >= size) {
+ 	    xmlChar *new_buf;
+             size_t new_size;
+@@ -4774,6 +4782,13 @@ xmlParseCommentComplex(xmlParserCtxtPtr ctxt, xmlChar *buf,
+ 	    GROW;
+ 	    cur = CUR_CHAR(l);
+ 	}
++
++        if (len > maxLength) {
++            xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
++                         "Comment too big found", NULL);
++            xmlFree (buf);
++            return;
++        }
+     }
+     buf[len] = 0;
+     if (cur == 0) {
+@@ -4818,6 +4833,9 @@ xmlParseComment(xmlParserCtxtPtr ctxt) {
+     xmlChar *buf = NULL;
+     size_t size = XML_PARSER_BUFFER_SIZE;
+     size_t len = 0;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_HUGE_LENGTH :
++                       XML_MAX_TEXT_LENGTH;
+     xmlParserInputState state;
+     const xmlChar *in;
+     size_t nbchar = 0;
+@@ -4901,8 +4919,7 @@ get_more:
+ 		buf[len] = 0;
+ 	    }
+ 	}
+-        if ((len > XML_MAX_TEXT_LENGTH) &&
+-            ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++        if (len > maxLength) {
+             xmlFatalErrMsgStr(ctxt, XML_ERR_COMMENT_NOT_FINISHED,
+                          "Comment too big found", NULL);
+             xmlFree (buf);
+@@ -5098,6 +5115,9 @@ xmlParsePI(xmlParserCtxtPtr ctxt) {
+     xmlChar *buf = NULL;
+     size_t len = 0;
+     size_t size = XML_PARSER_BUFFER_SIZE;
++    size_t maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                       XML_MAX_HUGE_LENGTH :
++                       XML_MAX_TEXT_LENGTH;
+     int cur, l;
+     const xmlChar *target;
+     xmlParserInputState state;
+@@ -5172,14 +5192,6 @@ xmlParsePI(xmlParserCtxtPtr ctxt) {
+                         return;
+                     }
+ 		    count = 0;
+-                    if ((len > XML_MAX_TEXT_LENGTH) &&
+-                        ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                        xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
+-                                          "PI %s too big found", target);
+-                        xmlFree(buf);
+-                        ctxt->instate = state;
+-                        return;
+-                    }
+ 		}
+ 		COPY_BUF(l,buf,len,cur);
+ 		NEXTL(l);
+@@ -5189,15 +5201,14 @@ xmlParsePI(xmlParserCtxtPtr ctxt) {
+ 		    GROW;
+ 		    cur = CUR_CHAR(l);
+ 		}
++                if (len > maxLength) {
++                    xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
++                                      "PI %s too big found", target);
++                    xmlFree(buf);
++                    ctxt->instate = state;
++                    return;
++                }
+ 	    }
+-            if ((len > XML_MAX_TEXT_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
+-                                  "PI %s too big found", target);
+-                xmlFree(buf);
+-                ctxt->instate = state;
+-                return;
+-            }
+ 	    buf[len] = 0;
+ 	    if (cur != '?') {
+ 		xmlFatalErrMsgStr(ctxt, XML_ERR_PI_NOT_FINISHED,
+@@ -8851,6 +8862,9 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+     const xmlChar *in = NULL, *start, *end, *last;
+     xmlChar *ret = NULL;
+     int line, col;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_HUGE_LENGTH :
++                    XML_MAX_TEXT_LENGTH;
+ 
+     GROW;
+     in = (xmlChar *) CUR_PTR;
+@@ -8906,8 +8920,7 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+ 		    in = in + delta;
+ 		}
+ 		end = ctxt->input->end;
+-                if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-                    ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++                if ((in - start) > maxLength) {
+                     xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                                    "AttValue length too long\n");
+                     return(NULL);
+@@ -8929,8 +8942,7 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+ 		    in = in + delta;
+ 		}
+ 		end = ctxt->input->end;
+-                if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-                    ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++                if ((in - start) > maxLength) {
+                     xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                                    "AttValue length too long\n");
+                     return(NULL);
+@@ -8963,16 +8975,14 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+ 		    last = last + delta;
+ 		}
+ 		end = ctxt->input->end;
+-                if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-                    ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++                if ((in - start) > maxLength) {
+                     xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                                    "AttValue length too long\n");
+                     return(NULL);
+                 }
+ 	    }
+ 	}
+-        if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-            ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++        if ((in - start) > maxLength) {
+             xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                            "AttValue length too long\n");
+             return(NULL);
+@@ -8994,8 +9004,7 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+ 		    in = in + delta;
+ 		}
+ 		end = ctxt->input->end;
+-                if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-                    ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++                if ((in - start) > maxLength) {
+                     xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                                    "AttValue length too long\n");
+                     return(NULL);
+@@ -9003,8 +9012,7 @@ xmlParseAttValueInternal(xmlParserCtxtPtr ctxt, int *len, int *alloc,
+ 	    }
+ 	}
+ 	last = in;
+-        if (((in - start) > XML_MAX_TEXT_LENGTH) &&
+-            ((ctxt->options & XML_PARSE_HUGE) == 0)) {
++        if ((in - start) > maxLength) {
+             xmlFatalErrMsg(ctxt, XML_ERR_ATTRIBUTE_NOT_FINISHED,
+                            "AttValue length too long\n");
+             return(NULL);
+@@ -9711,6 +9719,9 @@ xmlParseCDSect(xmlParserCtxtPtr ctxt) {
+     int	s, sl;
+     int cur, l;
+     int count = 0;
++    int maxLength = (ctxt->options & XML_PARSE_HUGE) ?
++                    XML_MAX_HUGE_LENGTH :
++                    XML_MAX_TEXT_LENGTH;
+ 
+     /* Check 2.6.0 was NXT(0) not RAW */
+     if (CMP9(CUR_PTR, '<', '!', '[', 'C', 'D', 'A', 'T', 'A', '[')) {
+@@ -9744,13 +9755,6 @@ xmlParseCDSect(xmlParserCtxtPtr ctxt) {
+ 	if (len + 5 >= size) {
+ 	    xmlChar *tmp;
+ 
+-            if ((size > XML_MAX_TEXT_LENGTH) &&
+-                ((ctxt->options & XML_PARSE_HUGE) == 0)) {
+-                xmlFatalErrMsgStr(ctxt, XML_ERR_CDATA_NOT_FINISHED,
+-                             "CData section too big found", NULL);
+-                xmlFree (buf);
+-                return;
+-            }
+ 	    tmp = (xmlChar *) xmlRealloc(buf, size * 2 * sizeof(xmlChar));
+ 	    if (tmp == NULL) {
+ 	        xmlFree(buf);
+@@ -9776,6 +9780,12 @@ xmlParseCDSect(xmlParserCtxtPtr ctxt) {
+ 	}
+ 	NEXTL(l);
+ 	cur = CUR_CHAR(l);
++        if (len > maxLength) {
++            xmlFatalErrMsg(ctxt, XML_ERR_CDATA_NOT_FINISHED,
++                           "CData section too big found\n");
++            xmlFree(buf);
++            return;
++        }
+     }
+     buf[len] = 0;
+     ctxt->instate = XML_PARSER_CONTENT;
+-- 
+2.39.0
+

SOURCES/libxml2-2.9.7-CVE-2022-40304.patch

@@ -0,0 +1,100 @@
+From a8fa5f7b5c3c745397b3178405d6be9fdb3cfcbc Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Wed, 31 Aug 2022 22:11:25 +0200
+Subject: [PATCH 2/2] Fix dict corruption caused by entity reference cycles
+
+When an entity reference cycle is detected, the entity content is
+cleared by setting its first byte to zero. But the entity content might
+be allocated from a dict. In this case, the dict entry becomes corrupted
+leading to all kinds of logic errors, including memory errors like
+double-frees.
+
+Stop storing entity content, orig, ExternalID and SystemID in a dict.
+These values are unlikely to occur multiple times in a document, so they
+shouldn't have been stored in a dict in the first place.
+
+Thanks to Ned Williamson and Nathan Wachholz working with Google Project
+Zero for the report!
+---
+ entities.c | 55 ++++++++++++++++--------------------------------------
+ 1 file changed, 16 insertions(+), 39 deletions(-)
+
+diff --git a/entities.c b/entities.c
+index c8193376..3bf1c3ce 100644
+--- a/entities.c
++++ b/entities.c
+@@ -112,36 +112,19 @@ xmlFreeEntity(xmlEntityPtr entity)
+     if ((entity->children) && (entity->owner == 1) &&
+         (entity == (xmlEntityPtr) entity->children->parent))
+         xmlFreeNodeList(entity->children);
+-    if (dict != NULL) {
+-        if ((entity->name != NULL) && (!xmlDictOwns(dict, entity->name)))
+-            xmlFree((char *) entity->name);
+-        if ((entity->ExternalID != NULL) &&
+-	    (!xmlDictOwns(dict, entity->ExternalID)))
+-            xmlFree((char *) entity->ExternalID);
+-        if ((entity->SystemID != NULL) &&
+-	    (!xmlDictOwns(dict, entity->SystemID)))
+-            xmlFree((char *) entity->SystemID);
+-        if ((entity->URI != NULL) && (!xmlDictOwns(dict, entity->URI)))
+-            xmlFree((char *) entity->URI);
+-        if ((entity->content != NULL)
+-            && (!xmlDictOwns(dict, entity->content)))
+-            xmlFree((char *) entity->content);
+-        if ((entity->orig != NULL) && (!xmlDictOwns(dict, entity->orig)))
+-            xmlFree((char *) entity->orig);
+-    } else {
+-        if (entity->name != NULL)
+-            xmlFree((char *) entity->name);
+-        if (entity->ExternalID != NULL)
+-            xmlFree((char *) entity->ExternalID);
+-        if (entity->SystemID != NULL)
+-            xmlFree((char *) entity->SystemID);
+-        if (entity->URI != NULL)
+-            xmlFree((char *) entity->URI);
+-        if (entity->content != NULL)
+-            xmlFree((char *) entity->content);
+-        if (entity->orig != NULL)
+-            xmlFree((char *) entity->orig);
+-    }
++    if ((entity->name != NULL) &&
++        ((dict == NULL) || (!xmlDictOwns(dict, entity->name))))
++        xmlFree((char *) entity->name);
++    if (entity->ExternalID != NULL)
++        xmlFree((char *) entity->ExternalID);
++    if (entity->SystemID != NULL)
++        xmlFree((char *) entity->SystemID);
++    if (entity->URI != NULL)
++        xmlFree((char *) entity->URI);
++    if (entity->content != NULL)
++        xmlFree((char *) entity->content);
++    if (entity->orig != NULL)
++        xmlFree((char *) entity->orig);
+     xmlFree(entity);
+ }
+ 
+@@ -177,18 +160,12 @@ xmlCreateEntity(xmlDictPtr dict, const xmlChar *name, int type,
+ 	    ret->SystemID = xmlStrdup(SystemID);
+     } else {
+         ret->name = xmlDictLookup(dict, name, -1);
+-	if (ExternalID != NULL)
+-	    ret->ExternalID = xmlDictLookup(dict, ExternalID, -1);
+-	if (SystemID != NULL)
+-	    ret->SystemID = xmlDictLookup(dict, SystemID, -1);
++	ret->ExternalID = xmlStrdup(ExternalID);
++	ret->SystemID = xmlStrdup(SystemID);
+     }
+     if (content != NULL) {
+         ret->length = xmlStrlen(content);
+-	if ((dict != NULL) && (ret->length < 5))
+-	    ret->content = (xmlChar *)
+-	                   xmlDictLookup(dict, content, ret->length);
+-	else
+-	    ret->content = xmlStrndup(content, ret->length);
++	ret->content = xmlStrndup(content, ret->length);
+      } else {
+         ret->length = 0;
+         ret->content = NULL;
+-- 
+2.39.0
+

SOURCES/libxml2-2.9.7-CVE-2023-29469.patch

@@ -0,0 +1,42 @@
+From a40db8fde759261b042138646da36c632a739f31 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Fri, 7 Apr 2023 11:49:27 +0200
+Subject: [PATCH] [CVE-2023-29469] Hashing of empty dict strings isn't
+ deterministic
+
+When hashing empty strings which aren't null-terminated,
+xmlDictComputeFastKey could produce inconsistent results. This could
+lead to various logic or memory errors, including double frees.
+
+For consistency the seed is also taken into account, but this shouldn't
+have an impact on security.
+
+Found by OSS-Fuzz.
+
+Fixes #510.
+
+Incorporates change from commit
+09a2dd453007f9c7205274623acdd73747c22d64.
+---
+ dict.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+diff --git a/dict.c b/dict.c
+index 0ef3718d..5e84cfca 100644
+--- a/dict.c
++++ b/dict.c
+@@ -444,8 +444,9 @@ static unsigned long
+ xmlDictComputeFastKey(const xmlChar *name, int namelen, int seed) {
+     unsigned long value = seed;
+ 
+-    if (name == NULL) return(0);
+-    value = *name;
++    if ((name == NULL) || (namelen <= 0))
++        return(value);
++    value += *name;
+     value <<= 5;
+     if (namelen > 10) {
+         value += name[namelen - 1];
+-- 
+2.41.0
+

SOURCES/libxml2-2.9.7-CVE-2024-25062.patch

@@ -0,0 +1,29 @@
+From b9d4ab2fd6b7da380edab777a0414ef254804f0d Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Sat, 14 Oct 2023 22:45:54 +0200
+Subject: [PATCH] [CVE-2024-25062] xmlreader: Don't expand XIncludes when
+ backtracking
+
+Fixes a use-after-free if XML Reader if used with DTD validation and
+XInclude expansion.
+
+Fixes #604.
+---
+ xmlreader.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/xmlreader.c b/xmlreader.c
+index 34c4c6bc..8f2f9131 100644
+--- a/xmlreader.c
++++ b/xmlreader.c
+@@ -1511,6 +1511,7 @@ node_found:
+      * Handle XInclude if asked for
+      */
+     if ((reader->xinclude) && (reader->node != NULL) &&
++        (reader->state != XML_TEXTREADER_BACKTRACK) &&
+ 	(reader->node->type == XML_ELEMENT_NODE) &&
+ 	(reader->node->ns != NULL) &&
+ 	((xmlStrEqual(reader->node->ns->href, XINCLUDE_NS)) ||
+-- 
+2.44.0
+

SPECS/libxml2.spec

@@ -7,7 +7,7 @@
 
 Name:           libxml2
 Version:        2.9.7
-Release:        13%{?dist}
+Release:        19%{?dist}
 Summary:        Library providing XML and HTML support
 
 License:        MIT
@@ -48,6 +48,28 @@ Patch14:        libxml2-2.9.7-CVE-2021-3537.patch
 Patch15:        libxml2-2.9.7-CVE-2021-3541.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=2057664
 Patch16:        libxml2-2.9.7-CVE-2022-23308.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2082298
+Patch17:        libxml2-2.9.7-CVE-2022-29824.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2120781
+Patch18:        libxml2-2.9.7-CVE-2016-3709.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2136563
+Patch19:        libxml2-2.9.7-CVE-2022-40303.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2136568
+Patch20:        libxml2-2.9.7-CVE-2022-40304.patch
+# https://bugzilla.redhat.com/show_bug.cgi?id=2186692
+Patch21:         libxml2-2.9.13-CVE-2023-28484.patch
+Patch22:         libxml2-2.9.13-CVE-2023-28484.2.patch
+Patch23:         libxml2-2.9.7-CVE-2023-29469.patch
+# https://issues.redhat.com/browse/RHEL-5179
+Patch24:         libxml2-2.11.0-fix-CVE-2023-39615.patch
+# https://issues.redhat.com/browse/RHEL-31056
+Patch25:         libxml2-2.9.7-CVE-2024-25062.patch
+# https://issues.redhat.com/browse/RHEL-76289
+Patch26:         libxml2-2.9.13-CVE-2022-49043.patch
+# https://issues.redhat.com/browse/RHEL-80122
+Patch27:        libxml2-2.9.13-CVE-2024-56171.patch
+# https://issues.redhat.com/browse/RHEL-80137
+Patch28:        libxml2-2.9.13-CVE-2025-24928.patch
 
 BuildRequires:  gcc
 BuildRequires:  cmake-rpm-macros
@@ -219,6 +241,33 @@ gzip -9 -c doc/libxml2-api.xml > doc/libxml2-api.xml.gz
 %{python3_sitearch}/libxml2mod.so
 
 %changelog
+* Tue Mar 11 2025 Michael Catanzaro <mcatanzaro@redhat.com> - 2.9.7-19
+- Fix CVE-2024-56171 (RHEL-80122)
+- Fix CVE-2025-24928 (RHEL-80137)
+
+* Tue Feb 11 2025 David King <dking@redhat.com> - 2.9.7.18.2
+- Fix CVE-2022-49043 (RHEL-76289)
+
+* Mon Apr 29 2024 David King <amigadave@amigadave.com> - 2.9.7-18.1
+- Fix CVE-2024-25062 (RHEL-31056)
+
+* Thu Sep 14 2023 David King <amigadave@amigadave.com> - 2.9.7-18
+- Fix CVE-2023-39615 (RHEL-5179)
+
+* Fri Jul 14 2023 David King <amigadave@amigadave.com> - 2.9.7-17
+- Fix CVE-2023-28484 (#2186692)
+- Fix CVE-2023-29469 (#2186692)
+
+* Wed Nov 02 2022 David King <dking@redhat.com> - 2.9.7-16
+- Fix CVE-2022-40303 (#2136563)
+- Fix CVE-2022-40304 (#2136568)
+
+* Wed Aug 24 2022 David King <dking@redhat.com> - 2.9.7-15
+- Fix CVE-2016-3709 (#2120781)
+
+* Thu May 12 2022 David King <dking@redhat.com> - 2.9.7-14
+- Fix CVE-2022-29824 (#2082298)
+
 * Thu Feb 24 2022 David King <dking@redhat.com> - 2.9.7-13
 - Bump release (#2057664)