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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: 5661bac10db7e20064c10660c47c361b7d2418ee)

Signed-off-by: Archana Polampalli <archana.polampalli@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>
This commit is contained in:
Archana Polampalli
2025-02-07 15:41:07 +00:00
committed by Steve Sakoman
parent 91c50c28c6
commit 4b8e4e26f0
2 changed files with 38 additions and 0 deletions
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37
meta/recipes-multimedia/ffmpeg/ffmpeg/CVE-2024-36613.patch Normal file
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@@ -0,0 +1,37 @@
From 50d8e4f27398fd5778485a827d7a2817921f8540 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michael@niedermayer.cc>
Date: Sat, 30 Sep 2023 00:51:29 +0200
Subject: [PATCH] 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/50d8e4f27398fd5778485a827d7a2817921f8540]
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 474b852..b4d9d00 100644
--- a/libavformat/dxa.c
+++ b/libavformat/dxa.c
@@ -122,7 +122,7 @@ static int dxa_read_header(AVFormatContext *s)
if(ast->codecpar->block_align) {
if (c->bpc > INT_MAX - ast->codecpar->block_align + 1)
return AVERROR_INVALIDDATA;
- 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);
--
2.40.0

1
meta/recipes-multimedia/ffmpeg/ffmpeg_6.1.1.bb
View File

@@ -41,6 +41,7 @@ SRC_URI = " \
file://CVE-2024-35367.patch \
file://CVE-2024-35368.patch \
file://CVE-2024-35365.patch \
file://CVE-2024-36613.patch \
"
SRC_URI[sha256sum] = "8684f4b00f94b85461884c3719382f1261f0d9eb3d59640a1f4ac0873616f968"