Fix CVE-2024-34459 (RHEL-36406)

Resolves: RHEL-36406

libxml2-2.9.13-CVE-2024-34459.patch

@@ -0,0 +1,26 @@
+From 8ddc7f13337c9fe7c6b6e616f404b0fffb8a5145 Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Wed, 8 May 2024 11:49:31 +0200
+Subject: [PATCH] [CVE-2024-34459] Fix buffer overread with `xmllint --htmlout`
+
+Add a missing bounds check.
+---
+ xmllint.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/xmllint.c b/xmllint.c
+index 0e433b721..62f6b0273 100644
+--- a/xmllint.c
++++ b/xmllint.c
+@@ -559,7 +559,7 @@ xmlHTMLPrintFileContext(xmlParserInputPtr input) {
+     len = strlen(buffer);
+     snprintf(&buffer[len], sizeof(buffer) - len, "\n");
+     cur = input->cur;
+-    while ((*cur == '\n') || (*cur == '\r'))
++    while ((cur > base) && ((*cur == '\n') || (*cur == '\r')))
+ 	cur--;
+     n = 0;
+     while ((cur != base) && (n++ < 80)) {
+-- 
+GitLab
+

libxml2.spec

@@ -1,6 +1,6 @@
 Name:           libxml2
 Version:        2.9.13
-Release:        14%{?dist}
+Release:        15%{?dist}
 Summary:        Library providing XML and HTML support
 
 License:        MIT
@@ -43,6 +43,8 @@ Patch16:         libxml2-2.12.5-CVE-2025-32415.patch
 Patch17:         libxml2-2.9.13-CVE-2025-32414.patch
 # https://issues.redhat.com/browse/RHEL-119283
 Patch18:        RHEL-119283.patch
+# https://redhat.atlassian.net/browse/RHEL-36406
+Patch19:        libxml2-2.9.13-CVE-2024-34459.patch
 
 BuildRequires:  cmake-rpm-macros
 BuildRequires:  gcc
@@ -171,6 +173,9 @@ gzip -9 -c doc/libxml2-api.xml > doc/libxml2-api.xml.gz
 %{python3_sitearch}/libxml2mod.so
 
 %changelog
+* Mon May 18 2026 David King <dking@redhat.com> - 2.9.13-15
+- Fix CVE-2024-34459 (RHEL-36406)
+
 * Tue Nov 13 2025 Laura Barcziova <lbarczio@redhat.com> - 2.9.13-14
 - Rebuilt for the correct target in RHEL (9.7-z) (RHEL-119283)