ffmpeg | branch: release/4.3 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Feb 9 01:28:17 2025 +0100| [80ebfdb7ca88219d4e3cea146140cafc91052bb1] | committer: Michael Niedermayer
avformat/iff: Check that we have a stream in read_dst_frame() Fixes: null pointer dereference Fixes: 385644864/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-4551049565765632 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Peter Ross <pr...@xvid.org> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 8668957ef604bd2b99175310638bc5031ae0d991) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=80ebfdb7ca88219d4e3cea146140cafc91052bb1 --- libavformat/iff.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavformat/iff.c b/libavformat/iff.c index caa0ef882b..4a46b4b393 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -359,6 +359,9 @@ static int read_dst_frame(AVFormatContext *s, AVPacket *pkt) uint64_t chunk_pos, data_pos, data_size; int ret = AVERROR_EOF; + if (s->nb_streams < 1) + return AVERROR_INVALIDDATA; + while (!avio_feof(pb)) { chunk_pos = avio_tell(pb); if (chunk_pos >= iff->body_end) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
