diff options
| author | Michael Niedermayer <[email protected]> | 2020-04-19 18:24:55 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-07-02 19:55:09 +0200 |
| commit | 9ce7c9c463b3f912b234af3dbfe1b4b46c4b443a (patch) | |
| tree | 807b5bc5b411d4b341255352c18211574b7ac989 | |
| parent | 2f1bf3452262311f58f68bd15e468509fe72e511 (diff) | |
avcodec/hevc_mp4toannexb_bsf: Check nalu_size
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 <[email protected]>
(cherry picked from commit ae2537f53e8ebfa36345241b5b70c0b1aef66dd2)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/hevc_mp4toannexb_bsf.c | 5 |
1 files changed, 5 insertions, 0 deletions
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 */ |