Fixes: Timeout Fixes: 33156/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_WMV3_fuzzer-6259655027326976
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/vc1.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index b7140c089c..40e2b4d692 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -672,6 +672,8 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) if (v->s.pict_type == AV_PICTURE_TYPE_P) v->rnd ^= 1; + if (get_bits_left(gb) < 5) + return AVERROR_INVALIDDATA; /* Quantizer stuff */ pqindex = get_bits(gb, 5); if (!pqindex) @@ -764,6 +766,9 @@ int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb) av_log(v->s.avctx, AV_LOG_DEBUG, "MB Skip plane encoding: " "Imode: %i, Invert: %i\n", status>>1, status&1); + if (get_bits_left(gb) < 4) + return AVERROR_INVALIDDATA; + /* Hopefully this is correct for P-frames */ v->s.mv_table_index = get_bits(gb, 2); //but using ff_vc1_ tables v->cbptab = get_bits(gb, 2); -- 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".