Fixes: Timeout (29sec -> 5ms) Fixes: 20237/clusterfuzz-testcase-minimized-ffmpeg_BSF_HEVC_MP4TOANNEXB_fuzzer-5165615044362240
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/hevc_mp4toannexb_bsf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/libavcodec/hevc_mp4toannexb_bsf.c b/libavcodec/hevc_mp4toannexb_bsf.c index baa93628ed..30f733d775 100644 --- a/libavcodec/hevc_mp4toannexb_bsf.c +++ b/libavcodec/hevc_mp4toannexb_bsf.c @@ -144,6 +144,11 @@ static int hevc_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out) for (i = 0; i < s->length_size; i++) nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb); + if (nalu_size < 2) { + ret = AVERROR_INVALIDDATA; + goto fail; + } + nalu_type = (bytestream2_peek_byte(&gb) >> 1) & 0x3f; /* prepend extradata to IRAP frames */ -- 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".
