Fixes: out of array read Fixes: 20494/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MVDV_fuzzer-5681452423577600
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/midivid.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/midivid.c b/libavcodec/midivid.c index bb5105bd57..8d4c3b369e 100644 --- a/libavcodec/midivid.c +++ b/libavcodec/midivid.c @@ -126,6 +126,8 @@ static int decode_mvdv(MidiVidContext *s, AVCodecContext *avctx, AVFrame *frame) idx9bits--; idx = bytestream2_get_byte(gb) | (((idx9val >> (7 - idx9bits)) & 1) << 8); } + if (idx >= nb_vectors) + return AVERROR_INVALIDDATA; dsty[x +frame->linesize[0]] = vec[idx * 12 + 0]; dsty[x+1+frame->linesize[0]] = vec[idx * 12 + 3]; -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
