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| author | Andriy Gelman <andriy.gelman@gmail.com> | 2019-12-06 11:03:02 -0500 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2019-12-06 15:05:56 -0300 |
| commit | 02a83e26de6a58523ee55cfebc1312e7a4e42724 (patch) | |
| tree | 3745b51f3ebbbc2c7a1b7718a5de030660a06a21 | |
| parent | 79d907774d59119dcfd1c04dae97b52890aec3ec (diff) | |
| download | ffmpeg-02a83e26de6a58523ee55cfebc1312e7a4e42724.tar.gz | |
lavc/cbs_h2645: Fix incorrect max size of nalu unit
In the worst case the startcode prefix has 4 bytes.
This fixes a trigerred assertion:
Assertion dp <= max_size failed at libavcodec/cbs_h2645.c:1451
Found-by:libFuzzer
Reviewed-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: Andriy Gelman <andriy.gelman@gmail.com>
| -rw-r--r-- | libavcodec/cbs_h2645.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c index 88fa0029cd..5f71d80584 100644 --- a/libavcodec/cbs_h2645.c +++ b/libavcodec/cbs_h2645.c @@ -1395,7 +1395,7 @@ static int cbs_h2645_assemble_fragment(CodedBitstreamContext *ctx, max_size = 0; for (i = 0; i < frag->nb_units; i++) { // Start code + content with worst-case emulation prevention. - max_size += 3 + frag->units[i].data_size * 3 / 2; + max_size += 4 + frag->units[i].data_size * 3 / 2; } data = av_realloc(NULL, max_size + AV_INPUT_BUFFER_PADDING_SIZE); |