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ffmpeg: fix CVE-2024-36613

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FFmpeg n6.1.1 has a vulnerability in the DXA demuxer of the libavformat library
allowing for an integer overflow, potentially resulting in a denial-of-service (DoS)
condition or other undefined behavior.

(From OE-Core rev: 1af53c8dd20662e720ac4dad31833a9d776b795a)

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Archana Polampalli
2025-02-14 10:49:27 +00:00
committed by Steve Sakoman
parent f2a425625c
commit 945621f3ce
2 changed files with 39 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36613.patch
+38
View File
@@ -0,0 +1,38 @@
From 1f6fcc64179377114b4ecc3b9f63bd5774a64edf Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 30 Sep 2023 00:51:29 +0200
Subject: [PATCH 2/4] avformat/dxa: Adjust order of operations around block
align
Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_DXA_fuzzer-5730576523198464
Fixes: signed integer overflow: 2147483566 + 82 cannot be represented in type 'int'
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 50d8e4f27398fd5778485a827d7a2817921f8540)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
CVE: CVE-2024-36613
Upstream-Status: Backport [https://github.com/ffmpeg/ffmpeg/commit/1f6fcc64179377114b4ecc3b9f63bd5774a64edf]
Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
---
libavformat/dxa.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavformat/dxa.c b/libavformat/dxa.c
index 16fbb08..53747c8 100644
--- a/libavformat/dxa.c
+++ b/libavformat/dxa.c
@@ -120,7 +120,7 @@ static int dxa_read_header(AVFormatContext *s)
}
c->bpc = (fsize + c->frames - 1) / c->frames;
if(ast->codecpar->block_align)
- c->bpc = ((c->bpc + ast->codecpar->block_align - 1) / ast->codecpar->block_align) * ast->codecpar->block_align;
+ c->bpc = ((c->bpc - 1 + ast->codecpar->block_align) / ast->codecpar->block_align) * ast->codecpar->block_align;
c->bytes_left = fsize;
c->wavpos = avio_tell(pb);
avio_seek(pb, c->vidpos, SEEK_SET);
--
2.40.0
meta/recipes-multimedia/ffmpeg/ffmpeg_5.0.1.bb
+1
View File
@@ -44,6 +44,7 @@ SRC_URI = "https://www.ffmpeg.org/releases/${BP}.tar.xz \
file://CVE-2024-35367.patch \
file://CVE-2024-35368.patch \
file://CVE-2025-0518.patch \
file://CVE-2024-36613.patch \
"
SRC_URI[sha256sum] = "ef2efae259ce80a240de48ec85ecb062cecca26e4352ffb3fda562c21a93007b"