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commit 6b1f7eecdef18156bc6ef035dee5a25d3786e640 Author: Michael Niedermayer <[email protected]> AuthorDate: Tue Feb 10 22:46:58 2026 +0100 Commit: Michael Niedermayer <[email protected]> CommitDate: Tue May 5 18:55:00 2026 +0200 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]> (cherry picked from commit 4f97e52042bd3e2bc2fbb67bd74fb4216cc7a916) 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 a33b405f05..5247ca45ca 100644 --- a/libavformat/cafdec.c +++ b/libavformat/cafdec.c @@ -236,6 +236,10 @@ 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]; _______________________________________________ ffmpeg-cvslog mailing list -- [email protected] To unsubscribe send an email to [email protected]
