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giflib: Fix CVE-2026-23868

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Pick patch according to [1]

[1] https://www.facebook.com/security/advisories/cve-2026-23868
[2] https://nvd.nist.gov/vuln/detail/CVE-2026-23868

Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
Signed-off-by: Anuj Mittal <anuj.mittal@oss.qualcomm.com>
This commit is contained in:
Vijay Anusuri 2026-03-27 14:39:20 +05:30 committed by Anuj Mittal
parent 57fc94a42d
commit b13ae5a8eb
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2 changed files with 35 additions and 0 deletions
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34
meta-oe/recipes-devtools/giflib/giflib/CVE-2026-23868.patch Normal file
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@ -0,0 +1,34 @@
From f5b7267aed3665ef025c13823e454170d031c106 Mon Sep 17 00:00:00 2001
From: Eric S. Raymond <esr@thyrsus.com>
Date: Wed Mar 4 18:49:49 2026 -0500
Subject: [PATCH] Avoid potentuial double-free on weird images.
Upstream-Status: Backport [https://sourceforge.net/p/giflib/code/ci/f5b7267aed3665ef025c13823e454170d031c106]
CVE: CVE-2026-23868
Signed-off-by: Vijay Anusuri <vanusuri@mvista.com>
---
gifalloc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/gifalloc.c b/gifalloc.c
index 47c6539..cfb6e33 100644
--- a/gifalloc.c
+++ b/gifalloc.c
@@ -349,6 +349,14 @@ SavedImage *GifMakeSavedImage(GifFileType *GifFile,
* aliasing problems.
*/
+ /* Null out aliased pointers before any allocations
+ * so that FreeLastSavedImage won't free CopyFrom's
+ * data if an allocation fails partway through. */
+ sp->ImageDesc.ColorMap = NULL;
+ sp->RasterBits = NULL;
+ sp->ExtensionBlocks = NULL;
+ sp->ExtensionBlockCount = 0;
+
/* first, the local color map */
if (CopyFrom->ImageDesc.ColorMap != NULL) {
sp->ImageDesc.ColorMap = GifMakeMapObject(
--
2.25.1

1
meta-oe/recipes-devtools/giflib/giflib_5.2.2.bb
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@ -10,6 +10,7 @@ DEPENDS = "xmlto-native"
SRC_URI = "${SOURCEFORGE_MIRROR}/giflib/${BP}.tar.gz \
https://sourceforge.net/p/giflib/code/ci/d54b45b0240d455bbaedee4be5203d2703e59967/tree/doc/giflib-logo.gif?format=raw;subdir=${BP}/doc;name=logo;downloadfilename=giflib-logo.gif \
file://0001-Makefile-fix-typo-in-soname-argument.patch \
file://CVE-2026-23868.patch \
"
SRC_URI[logo.sha256sum] = "1a54383986adad1521d00e003b4c482c27e8bc60690be944a1f3319c75abc2c9"