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Add patch for CVE-2026-2921

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Resolves: RHEL-156169
This commit is contained in:
Wim Taymans 2026-03-31 12:57:07 +02:00
parent c8375f1253
commit 1b37d2ac58
2 changed files with 51 additions and 1 deletions
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44
0001-riff-Correctly-check-that-enough-RGB-palette-data-is.patch Normal file
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@ -0,0 +1,44 @@
From 10f6686ddd7ce489d0c5486c2008a42879c17216 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Wed, 11 Feb 2026 19:44:34 +0200
Subject: [PATCH] riff: Correctly check that enough RGB palette data is
available
This can otherwise overflow and result in out-of-bounds reads/writes.
Fixes GST-SA-2026-0004, ZDI-CAN-28854, CVE-2026-2921.
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/4901
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/10882>
---
gst-libs/gst/riff/riff-media.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gst-libs/gst/riff/riff-media.c b/gst-libs/gst/riff/riff-media.c
index 2d6aa55d8..66d1cb60b 100644
--- a/gst-libs/gst/riff/riff-media.c
+++ b/gst-libs/gst/riff/riff-media.c
@@ -965,7 +965,7 @@ gst_riff_create_video_caps (guint32 codec_fcc,
if (palette) {
GstBuffer *copy;
guint num_colors;
- gsize size;
+ gsize expected_size, size;
if (strf != NULL)
num_colors = strf->num_colors;
@@ -974,7 +974,9 @@ gst_riff_create_video_caps (guint32 codec_fcc,
size = gst_buffer_get_size (palette);
- if (size >= (num_colors * 4)) {
+ if (!g_size_checked_mul (&expected_size, num_colors, 4)) {
+ GST_WARNING ("Palette too large: broken file");
+ } else if (size >= expected_size) {
guint8 *pdata;
/* palette is always at least 256*4 bytes */
--
2.53.0

8
gstreamer1-plugins-base.spec
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@ -6,7 +6,7 @@
Name: gstreamer1-plugins-base
Version: 1.16.1
Release: 5%{?gitcommit:.git%{shortcommit}}%{?dist}
Release: 6%{?gitcommit:.git%{shortcommit}}%{?dist}
Summary: GStreamer streaming media framework base plugins
License: LGPLv2+
@ -26,6 +26,7 @@ Patch4: 0005-exiftag-Prevent-integer-overflows-and-out-of-bounds-.patch
Patch5: 0006-opusdec-Set-at-most-64-channels-to-NONE-position.patch
Patch6: 0007-vorbis_parse-check-writes-to-GstOggStream.vorbis_mod.patch
Patch7: 0008-vorbisdec-Set-at-most-64-channels-to-NONE-position.patch
Patch8: 0001-riff-Correctly-check-that-enough-RGB-palette-data-is.patch
BuildRequires: gcc-c++
BuildRequires: gstreamer1-devel >= %{version}
@ -128,6 +129,7 @@ for the GStreamer Base Plugins library.
%patch5 -p1
%patch6 -p1
%patch7 -p1
%patch8 -p1
%build
# die rpath (method of modifying libtool fails here)
@ -495,6 +497,10 @@ chrpath --delete $RPM_BUILD_ROOT%{_bindir}/gst-play-1.0
%changelog
* Tue Mar 31 2026 Wim Taymans <wtaymans@redhat.com> - 1.16.1-6
- Add patch for CVE-2026-2921
Resolves: RHEL-156169
* Mon Dec 16 2024 Wim Taymans <wtaymans@redhat.com> - 1.16.1-5
- Fixes for CVE-2024-47538, CVE-2024-47607, CVE-2024-47615
Resolves: RHEL-70974, RHEL-71010, RHEL-70986