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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-04-10 22:05:07 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-05 01:47:56 +0200 |
| commit | 75df98c0a00aa664e8645a07b7f9ad6760ba6631 (patch) | |
| tree | 450d60fdec4b2421eb92c930d4149e75e6713ef0 | |
| parent | c540f6939de2ed1eff0f860b2534c8383b3c5e32 (diff) | |
| download | ffmpeg-75df98c0a00aa664e8645a07b7f9ad6760ba6631.tar.gz | |
avcodec/cbs: Allocate more CodedBitstreamUnit at once in cbs_insert_unit()
Fixes: Timeout (85sec -> 0.5sec)
Fixes: 20791/clusterfuzz-testcase-minimized-ffmpeg_BSF_AV1_FRAME_SPLIT_fuzzer-5659537719951360
Fixes: 21214/clusterfuzz-testcase-minimized-ffmpeg_BSF_MPEG2_METADATA_fuzzer-5165560875974656
Fixes: 21247/clusterfuzz-testcase-minimized-ffmpeg_BSF_H264_METADATA_fuzzer-5715175257931776
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 49ba60fed04d7011c36bae378445ba93ccf983c2)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/cbs.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/cbs.c b/libavcodec/cbs.c index 0ce66170ec..0a71385fa2 100644 --- a/libavcodec/cbs.c +++ b/libavcodec/cbs.c @@ -693,11 +693,11 @@ static int cbs_insert_unit(CodedBitstreamContext *ctx, memmove(units + position + 1, units + position, (frag->nb_units - position) * sizeof(*units)); } else { - units = av_malloc_array(frag->nb_units + 1, sizeof(*units)); + units = av_malloc_array(frag->nb_units*2 + 1, sizeof(*units)); if (!units) return AVERROR(ENOMEM); - ++frag->nb_units_allocated; + frag->nb_units_allocated = 2*frag->nb_units_allocated + 1; if (position > 0) memcpy(units, frag->units, position * sizeof(*units)); |