ffmpeg | branch: release/4.4 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Sep 5 21:24:15 2021 +0200| [26083824d7de19ed75a6b3418697aa9efe47af65] | committer: Michael Niedermayer
avformat/mxfdec: check channel number in mxf_get_d10_aes3_packet() Fixes: Out of array access Fixes: 37030/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5387719147651072 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Tomas Härdin <tjop...@acc.umu.se> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 3dd5a8a13510d08a4e25e8f138d718672a0fed4a) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=26083824d7de19ed75a6b3418697aa9efe47af65 --- libavformat/mxfdec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavformat/mxfdec.c b/libavformat/mxfdec.c index c51eed32ec..50174fcd5f 100644 --- a/libavformat/mxfdec.c +++ b/libavformat/mxfdec.c @@ -565,6 +565,10 @@ static int mxf_get_d10_aes3_packet(AVIOContext *pb, AVStream *st, AVPacket *pkt, data_ptr = pkt->data; end_ptr = pkt->data + length; buf_ptr = pkt->data + 4; /* skip SMPTE 331M header */ + + if (st->codecpar->channels > 8) + return AVERROR_INVALIDDATA; + for (; end_ptr - buf_ptr >= st->codecpar->channels * 4; ) { for (i = 0; i < st->codecpar->channels; i++) { uint32_t sample = bytestream_get_le32(&buf_ptr); _______________________________________________ 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".
