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10 changed files with 3 additions and 491 deletions

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From 96798fc1967491c80a4d0c8d9e0a80586cb2152b Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Fri, 22 Mar 2024 18:51:45 -0700
Subject: [PATCH 1/4] Xi: ProcXIGetSelectedEvents needs to use unswapped length
to send reply
CVE-2024-31080
Reported-by: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=69762
Fixes: 53e821ab4 ("Xi: add request processing for XIGetSelectedEvents.")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1463>
---
Xi/xiselectev.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Xi/xiselectev.c b/Xi/xiselectev.c
index edcb8a0d3..ac1494987 100644
--- a/Xi/xiselectev.c
+++ b/Xi/xiselectev.c
@@ -349,6 +349,7 @@ ProcXIGetSelectedEvents(ClientPtr client)
InputClientsPtr others = NULL;
xXIEventMask *evmask = NULL;
DeviceIntPtr dev;
+ uint32_t length;
REQUEST(xXIGetSelectedEventsReq);
REQUEST_SIZE_MATCH(xXIGetSelectedEventsReq);
@@ -418,10 +419,12 @@ ProcXIGetSelectedEvents(ClientPtr client)
}
}
+ /* save the value before SRepXIGetSelectedEvents swaps it */
+ length = reply.length;
WriteReplyToClient(client, sizeof(xXIGetSelectedEventsReply), &reply);
if (reply.num_masks)
- WriteToClient(client, reply.length * 4, buffer);
+ WriteToClient(client, length * 4, buffer);
free(buffer);
return Success;
--
2.44.0

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From 133e0d651c5d12bf01999d6289e84e224ba77adc Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Mon, 22 Jan 2024 14:22:12 +1000
Subject: [PATCH] dix: fix valuator copy/paste error in the DeviceStateNotify
event
Fixes 219c54b8a3337456ce5270ded6a67bcde53553d5
---
dix/enterleave.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/dix/enterleave.c b/dix/enterleave.c
index 7b7ba1098..c1e6ac600 100644
--- a/dix/enterleave.c
+++ b/dix/enterleave.c
@@ -619,11 +619,11 @@ FixDeviceValuator(DeviceIntPtr dev, deviceValuator * ev, ValuatorClassPtr v,
ev->first_valuator = first;
switch (ev->num_valuators) {
case 6:
- ev->valuator2 = v->axisVal[first + 5];
+ ev->valuator5 = v->axisVal[first + 5];
case 5:
- ev->valuator2 = v->axisVal[first + 4];
+ ev->valuator4 = v->axisVal[first + 4];
case 4:
- ev->valuator2 = v->axisVal[first + 3];
+ ev->valuator3 = v->axisVal[first + 3];
case 3:
ev->valuator2 = v->axisVal[first + 2];
case 2:
--
2.44.0

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From e89edec497bac581ca9b614fb00c25365580f045 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Exp=C3=B3sito?= <jexposit@redhat.com>
Date: Fri, 19 Jan 2024 13:05:51 +0100
Subject: [PATCH] ephyr: Fix incompatible pointer type build error
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fix a compilation error on 32 bits architectures with gcc 14:
ephyr_glamor_xv.c: In function ephyr_glamor_xv_init:
ephyr_glamor_xv.c:154:31: error: assignment to SetPortAttributeFuncPtr {aka int (*)(struct _KdScreenInfo *, long unsigned int, int, void *)} from incompatible pointer type int (*)(KdScreenInfo *, Atom, INT32, void *) {aka int (*)(struct _KdScreenInfo *, long unsigned int, long int, void *)} [-Wincompatible-pointer-types]
154 | adaptor->SetPortAttribute = ephyr_glamor_xv_set_port_attribute;
| ^
ephyr_glamor_xv.c:155:31: error: assignment to GetPortAttributeFuncPtr {aka int (*)(struct _KdScreenInfo *, long unsigned int, int *, void *)} from incompatible pointer type int (*)(KdScreenInfo *, Atom, INT32 *, void *) {aka int (*)(struct _KdScreenInfo *, long unsigned int, long int *, void *)} [-Wincompatible-pointer-types]
155 | adaptor->GetPortAttribute = ephyr_glamor_xv_get_port_attribute;
| ^
Build error logs:
https://koji.fedoraproject.org/koji/taskinfo?taskID=111964273
Signed-off-by: José Expósito <jexposit@redhat.com>
---
hw/kdrive/ephyr/ephyr_glamor_xv.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/hw/kdrive/ephyr/ephyr_glamor_xv.c b/hw/kdrive/ephyr/ephyr_glamor_xv.c
index 4dd15cf41..b5eae48c8 100644
--- a/hw/kdrive/ephyr/ephyr_glamor_xv.c
+++ b/hw/kdrive/ephyr/ephyr_glamor_xv.c
@@ -50,16 +50,16 @@ ephyr_glamor_xv_stop_video(KdScreenInfo *screen, void *data, Bool cleanup)
static int
ephyr_glamor_xv_set_port_attribute(KdScreenInfo *screen,
- Atom attribute, INT32 value, void *data)
+ Atom attribute, int value, void *data)
{
- return glamor_xv_set_port_attribute(data, attribute, value);
+ return glamor_xv_set_port_attribute(data, attribute, (INT32)value);
}
static int
ephyr_glamor_xv_get_port_attribute(KdScreenInfo *screen,
- Atom attribute, INT32 *value, void *data)
+ Atom attribute, int *value, void *data)
{
- return glamor_xv_get_port_attribute(data, attribute, value);
+ return glamor_xv_get_port_attribute(data, attribute, (INT32 *)value);
}
static void
--
2.43.0

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From 337d8d48b618d4fc0168a7b978be4c3447650b04 Mon Sep 17 00:00:00 2001
From: Olivier Fourdan <ofourdan@redhat.com>
Date: Fri, 5 Apr 2024 15:24:49 +0200
Subject: [PATCH] render: Avoid possible double-free in ProcRenderAddGlyphs()
ProcRenderAddGlyphs() adds the glyph to the glyphset using AddGlyph() and
then frees it using FreeGlyph() to decrease the reference count, after
AddGlyph() has increased it.
AddGlyph() however may chose to reuse an existing glyph if it's already
in the glyphSet, and free the glyph that was given, in which case the
caller function, ProcRenderAddGlyphs() will call FreeGlyph() on an
already freed glyph, as reported by ASan:
READ of size 4 thread T0
#0 in FreeGlyph xserver/render/glyph.c:252
#1 in ProcRenderAddGlyphs xserver/render/render.c:1174
#2 in Dispatch xserver/dix/dispatch.c:546
#3 in dix_main xserver/dix/main.c:271
#4 in main xserver/dix/stubmain.c:34
#5 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
#6 in __libc_start_main_impl ../csu/libc-start.c:360
#7 (/usr/bin/Xwayland+0x44fe4)
Address is located 0 bytes inside of 64-byte region
freed by thread T0 here:
#0 in __interceptor_free libsanitizer/asan/asan_malloc_linux.cpp:52
#1 in _dixFreeObjectWithPrivates xserver/dix/privates.c:538
#2 in AddGlyph xserver/render/glyph.c:295
#3 in ProcRenderAddGlyphs xserver/render/render.c:1173
#4 in Dispatch xserver/dix/dispatch.c:546
#5 in dix_main xserver/dix/main.c:271
#6 in main xserver/dix/stubmain.c:34
#7 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
previously allocated by thread T0 here:
#0 in __interceptor_malloc libsanitizer/asan/asan_malloc_linux.cpp:69
#1 in AllocateGlyph xserver/render/glyph.c:355
#2 in ProcRenderAddGlyphs xserver/render/render.c:1085
#3 in Dispatch xserver/dix/dispatch.c:546
#4 in dix_main xserver/dix/main.c:271
#5 in main xserver/dix/stubmain.c:34
#6 in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
SUMMARY: AddressSanitizer: heap-use-after-free xserver/render/glyph.c:252 in FreeGlyph
To avoid that, make sure not to free the given glyph in AddGlyph().
v2: Simplify the test using the boolean returned from AddGlyph() (Michel)
v3: Simplify even more by not freeing the glyph in AddGlyph() (Peter)
Fixes: bdca6c3d1 - render: fix refcounting of glyphs during ProcRenderAddGlyphs
Closes: https://gitlab.freedesktop.org/xorg/xserver/-/issues/1659
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1476>
---
render/glyph.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/render/glyph.c b/render/glyph.c
index 13991f8a1..5fa7f3b5b 100644
--- a/render/glyph.c
+++ b/render/glyph.c
@@ -291,8 +291,6 @@ AddGlyph(GlyphSetPtr glyphSet, GlyphPtr glyph, Glyph id)
gr = FindGlyphRef(&globalGlyphs[glyphSet->fdepth], signature,
TRUE, glyph->sha1);
if (gr->glyph && gr->glyph != DeletedGlyph && gr->glyph != glyph) {
- FreeGlyphPicture(glyph);
- dixFreeObjectWithPrivates(glyph, PRIVATE_GLYPH);
glyph = gr->glyph;
}
else if (gr->glyph != glyph) {
--
2.44.0

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From 56351307017e2501f7cd6e31efcfb55c19aba75a Mon Sep 17 00:00:00 2001
From: Matthieu Herrb <matthieu@herrb.eu>
Date: Thu, 10 Oct 2024 10:37:28 +0200
Subject: [PATCH] xkb: Fix buffer overflow in _XkbSetCompatMap()
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
The _XkbSetCompatMap() function attempts to resize the `sym_interpret`
buffer.
However, It didn't update its size properly. It updated `num_si` only,
without updating `size_si`.
This may lead to local privilege escalation if the server is run as root
or remote code execution (e.g. x11 over ssh).
CVE-2024-9632, ZDI-CAN-24756
This vulnerability was discovered by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Tested-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: José Expósito <jexposit@redhat.com>
---
xkb/xkb.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/xkb/xkb.c b/xkb/xkb.c
index f203270d5..70e8279aa 100644
--- a/xkb/xkb.c
+++ b/xkb/xkb.c
@@ -2991,13 +2991,13 @@ _XkbSetCompatMap(ClientPtr client, DeviceIntPtr dev,
XkbSymInterpretPtr sym;
unsigned int skipped = 0;
- if ((unsigned) (req->firstSI + req->nSI) > compat->num_si) {
- compat->num_si = req->firstSI + req->nSI;
+ if ((unsigned) (req->firstSI + req->nSI) > compat->size_si) {
+ compat->num_si = compat->size_si = req->firstSI + req->nSI;
compat->sym_interpret = reallocarray(compat->sym_interpret,
- compat->num_si,
+ compat->size_si,
sizeof(XkbSymInterpretRec));
if (!compat->sym_interpret) {
- compat->num_si = 0;
+ compat->num_si = compat->size_si = 0;
return BadAlloc;
}
}
--
2.46.2

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From 3e77295f888c67fc7645db5d0c00926a29ffecee Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Fri, 22 Mar 2024 18:56:27 -0700
Subject: [PATCH 2/4] Xi: ProcXIPassiveGrabDevice needs to use unswapped length
to send reply
CVE-2024-31081
Fixes: d220d6907 ("Xi: add GrabButton and GrabKeysym code.")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1463>
---
Xi/xipassivegrab.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/Xi/xipassivegrab.c b/Xi/xipassivegrab.c
index c9ac2f855..896233bec 100644
--- a/Xi/xipassivegrab.c
+++ b/Xi/xipassivegrab.c
@@ -93,6 +93,7 @@ ProcXIPassiveGrabDevice(ClientPtr client)
GrabParameters param;
void *tmp;
int mask_len;
+ uint32_t length;
REQUEST(xXIPassiveGrabDeviceReq);
REQUEST_FIXED_SIZE(xXIPassiveGrabDeviceReq,
@@ -247,9 +248,11 @@ ProcXIPassiveGrabDevice(ClientPtr client)
}
}
+ /* save the value before SRepXIPassiveGrabDevice swaps it */
+ length = rep.length;
WriteReplyToClient(client, sizeof(rep), &rep);
if (rep.num_modifiers)
- WriteToClient(client, rep.length * 4, modifiers_failed);
+ WriteToClient(client, length * 4, modifiers_failed);
out:
free(modifiers_failed);
--
2.44.0

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@ -1,47 +0,0 @@
From 6c684d035c06fd41c727f0ef0744517580864cef Mon Sep 17 00:00:00 2001
From: Alan Coopersmith <alan.coopersmith@oracle.com>
Date: Fri, 22 Mar 2024 19:07:34 -0700
Subject: [PATCH 3/4] Xquartz: ProcAppleDRICreatePixmap needs to use unswapped
length to send reply
CVE-2024-31082
Fixes: 14205ade0 ("XQuartz: appledri: Fix byte swapping in replies")
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1463>
---
hw/xquartz/xpr/appledri.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/xquartz/xpr/appledri.c b/hw/xquartz/xpr/appledri.c
index 77574655b..40422b61a 100644
--- a/hw/xquartz/xpr/appledri.c
+++ b/hw/xquartz/xpr/appledri.c
@@ -272,6 +272,7 @@ ProcAppleDRICreatePixmap(ClientPtr client)
xAppleDRICreatePixmapReply rep;
int width, height, pitch, bpp;
void *ptr;
+ CARD32 stringLength;
REQUEST_SIZE_MATCH(xAppleDRICreatePixmapReq);
@@ -307,6 +308,7 @@ ProcAppleDRICreatePixmap(ClientPtr client)
if (sizeof(rep) != sz_xAppleDRICreatePixmapReply)
ErrorF("error sizeof(rep) is %zu\n", sizeof(rep));
+ stringLength = rep.stringLength; /* save unswapped value */
if (client->swapped) {
swaps(&rep.sequenceNumber);
swapl(&rep.length);
@@ -319,7 +321,7 @@ ProcAppleDRICreatePixmap(ClientPtr client)
}
WriteToClient(client, sizeof(rep), &rep);
- WriteToClient(client, rep.stringLength, path);
+ WriteToClient(client, stringLength, path);
return Success;
}
--
2.44.0

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@ -1,112 +0,0 @@
From bdca6c3d1f5057eeb31609b1280fc93237b00c77 Mon Sep 17 00:00:00 2001
From: Peter Hutterer <peter.hutterer@who-t.net>
Date: Tue, 30 Jan 2024 13:13:35 +1000
Subject: [PATCH 4/4] render: fix refcounting of glyphs during
ProcRenderAddGlyphs
Previously, AllocateGlyph would return a new glyph with refcount=0 and a
re-used glyph would end up not changing the refcount at all. The
resulting glyph_new array would thus have multiple entries pointing to
the same non-refcounted glyphs.
AddGlyph may free a glyph, resulting in a UAF when the same glyph
pointer is then later used.
Fix this by returning a refcount of 1 for a new glyph and always
incrementing the refcount for a re-used glyph, followed by dropping that
refcount back down again when we're done with it.
CVE-2024-31083, ZDI-CAN-22880
This vulnerability was discovered by:
Jan-Niklas Sohn working with Trend Micro Zero Day Initiative
Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1463>
---
render/glyph.c | 5 +++--
render/glyphstr_priv.h | 1 +
render/render.c | 15 +++++++++++----
3 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/render/glyph.c b/render/glyph.c
index 850ea8440..13991f8a1 100644
--- a/render/glyph.c
+++ b/render/glyph.c
@@ -245,10 +245,11 @@ FreeGlyphPicture(GlyphPtr glyph)
}
}
-static void
+void
FreeGlyph(GlyphPtr glyph, int format)
{
CheckDuplicates(&globalGlyphs[format], "FreeGlyph");
+ BUG_RETURN(glyph->refcnt == 0);
if (--glyph->refcnt == 0) {
GlyphRefPtr gr;
int i;
@@ -354,7 +355,7 @@ AllocateGlyph(xGlyphInfo * gi, int fdepth)
glyph = (GlyphPtr) malloc(size);
if (!glyph)
return 0;
- glyph->refcnt = 0;
+ glyph->refcnt = 1;
glyph->size = size + sizeof(xGlyphInfo);
glyph->info = *gi;
dixInitPrivates(glyph, (char *) glyph + head_size, PRIVATE_GLYPH);
diff --git a/render/glyphstr.h b/render/glyphstr.h
index 2f51bd244..3b1d806d1 100644
--- a/render/glyphstr.h
+++ b/render/glyphstr.h
@@ -108,6 +108,7 @@ extern Bool
extern GlyphPtr FindGlyph(GlyphSetPtr glyphSet, Glyph id);
extern GlyphPtr AllocateGlyph(xGlyphInfo * gi, int format);
+extern void FreeGlyph(GlyphPtr glyph, int format);
extern Bool
ResizeGlyphSet(GlyphSetPtr glyphSet, CARD32 change);
diff --git a/render/render.c b/render/render.c
index 29c5055c6..fe5e37dd9 100644
--- a/render/render.c
+++ b/render/render.c
@@ -1076,6 +1076,7 @@ ProcRenderAddGlyphs(ClientPtr client)
if (glyph_new->glyph && glyph_new->glyph != DeletedGlyph) {
glyph_new->found = TRUE;
+ ++glyph_new->glyph->refcnt;
}
else {
GlyphPtr glyph;
@@ -1168,8 +1169,10 @@ ProcRenderAddGlyphs(ClientPtr client)
err = BadAlloc;
goto bail;
}
- for (i = 0; i < nglyphs; i++)
+ for (i = 0; i < nglyphs; i++) {
AddGlyph(glyphSet, glyphs[i].glyph, glyphs[i].id);
+ FreeGlyph(glyphs[i].glyph, glyphSet->fdepth);
+ }
if (glyphsBase != glyphsLocal)
free(glyphsBase);
@@ -1179,9 +1182,13 @@ ProcRenderAddGlyphs(ClientPtr client)
FreePicture((void *) pSrc, 0);
if (pSrcPix)
FreeScratchPixmapHeader(pSrcPix);
- for (i = 0; i < nglyphs; i++)
- if (glyphs[i].glyph && !glyphs[i].found)
- free(glyphs[i].glyph);
+ for (i = 0; i < nglyphs; i++) {
+ if (glyphs[i].glyph) {
+ --glyphs[i].glyph->refcnt;
+ if (!glyphs[i].found)
+ free(glyphs[i].glyph);
+ }
+ }
if (glyphsBase != glyphsLocal)
free(glyphsBase);
return err;
--
2.44.0

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@ -46,7 +46,7 @@
Summary: X.Org X11 X server
Name: xorg-x11-server
Version: 1.20.11
Release: 25%{?gitdate:.%{gitdate}}%{?dist}
Release: 22%{?gitdate:.%{gitdate}}%{?dist}
URL: http://www.x.org
License: MIT
Group: User Interface/X
@ -175,21 +175,6 @@ Patch10040: 0009-ephyr-xwayland-Use-the-proper-private-key-for-cursor.patch
Patch10041: 0001-hw-Rename-boolean-config-value-field-from-bool-to-bo.patch
# Related to CVE-2024-21886
Patch10042: 0001-dix-Fix-use-after-free-in-input-device-shutdown.patch
# Fix compilation error on i686
Patch10043: 0001-ephyr-Fix-incompatible-pointer-type-build-error.patch
# Fix copy and paste error in CVE-2024-0229
Patch10044: 0001-dix-fix-valuator-copy-paste-error-in-the-DeviceState.patch
# CVE-2024-31080
Patch10045: 0001-Xi-ProcXIGetSelectedEvents-needs-to-use-unswapped-le.patch
# CVE-2024-31081
Patch10046: 0002-Xi-ProcXIPassiveGrabDevice-needs-to-use-unswapped-le.patch
# CVE-2024-31082
Patch10047: 0003-Xquartz-ProcAppleDRICreatePixmap-needs-to-use-unswap.patch
# CVE-2024-31083
Patch10048: 0004-render-fix-refcounting-of-glyphs-during-ProcRenderAd.patch
Patch10049: 0001-render-Avoid-possible-double-free-in-ProcRenderAddGl.patch
# CVE-2024-9632
Patch10050: 0001-xkb-Fix-buffer-overflow-in-_XkbSetCompatMap.patch
BuildRequires: make
BuildRequires: systemtap-sdt-devel
@ -332,7 +317,6 @@ License: MIT and GPLv2
Requires: xorg-x11-server-common >= %{version}-%{release}
# required for xvfb-run
Requires: xorg-x11-xauth
Requires: util-linux
Provides: Xvfb
%description Xvfb
@ -618,19 +602,7 @@ find %{inst_srcdir}/hw/xfree86 -name \*.c -delete
%changelog
* Tue Oct 29 2024 José Expósito <jexposit@redhat.com> - 1.20.11-25
- CVE fix for CVE-2024-9632
* Wed Apr 10 2024 José Expósito <jexposit@redhat.com> - 1.20.11-24
- Fix regression caused by the fix for CVE-2024-31083
* Thu Apr 04 2024 José Expósito <jexposit@redhat.com> - 1.20.11-23
- CVE fix for: CVE-2024-31080, CVE-2024-31081, CVE-2024-31082 and
CVE-2024-31083
- Add util-linux as a dependency of Xvfb
- Fix compilation error on i686
* Thu Jan 18 2024 José Expósito <jexposit@redhat.com> - 1.20.11-22
* Thu Jan 18 2024 José Expósito <jexposit@redhat.com> - 1.20.4-24
- Fix use after free related to CVE-2024-21886
* Tue Jan 16 2024 José Expósito <jexposit@redhat.com> - 1.20.11-21