ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Fri Dec 6 00:07:17 2019 +0100| [e7011a0ca6548e12b458259c51e305e8a4d5ae2e] | committer: Michael Niedermayer
avcodec/mvha: Check remaining space when reading VLC table probabilities Fixes: Infinite loop Fixes: 19183/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVHA_fuzzer-5666216765292544 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Paul B Mahol <one...@gmail.com> Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e7011a0ca6548e12b458259c51e305e8a4d5ae2e --- libavcodec/mvha.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/mvha.c b/libavcodec/mvha.c index 4b03a79283..c270063b1c 100644 --- a/libavcodec/mvha.c +++ b/libavcodec/mvha.c @@ -203,6 +203,9 @@ static int decode_frame(AVCodecContext *avctx, for (int i = 0; i < s->nb_symbols; symbol++) { int prob; + if (get_bits_left(gb) < 4) + return AVERROR_INVALIDDATA; + if (get_bits1(gb)) { prob = get_bits(gb, 12); } else { _______________________________________________ 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".
