PR #21729 opened by michaelni URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21729 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21729.patch
Fixes: Timeout Fixes: 477315122/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-5274792315125760 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> >From 0eb83a4d5a8a70a2322f649aea31b8132ab54edf Mon Sep 17 00:00:00 2001 From: Michael Niedermayer <[email protected]> Date: Tue, 10 Feb 2026 22:46:58 +0100 Subject: [PATCH] avformat/cafdec: Check nb_entries in read_info_chunk() Fixes: Timeout Fixes: 477315122/clusterfuzz-testcase-minimized-ffmpeg_dem_CAF_fuzzer-5274792315125760 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> --- libavformat/cafdec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/cafdec.c b/libavformat/cafdec.c index 656b473140..1557391ef3 100644 --- a/libavformat/cafdec.c +++ b/libavformat/cafdec.c @@ -326,6 +326,10 @@ static void read_info_chunk(AVFormatContext *s, int64_t size) AVIOContext *pb = s->pb; unsigned int i; unsigned int nb_entries = avio_rb32(pb); + + if (3LL * nb_entries > size) + return; + for (i = 0; i < nb_entries && !avio_feof(pb); i++) { char key[32]; char value[1024]; -- 2.52.0 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
