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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-10-21 00:26:25 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-11-09 17:26:09 +0100 |
| commit | 1c038c5c63375883a8a94332cffd701c4cb1301a (patch) | |
| tree | 50fcf30928e6e15cd2602f5f1759abae3f804678 | |
| parent | be78999266cdf79ffd8b9a760e8d3bc1c9ae228b (diff) | |
| download | ffmpeg-streaming-1c038c5c63375883a8a94332cffd701c4cb1301a.zip ffmpeg-streaming-1c038c5c63375883a8a94332cffd701c4cb1301a.tar.gz | |
avcodec/apedec: Fix integer overflow in filter_3800()
Fixes: signed integer overflow: 2117181180 + 60483298 cannot be represented in type 'int'
Fixes: 18344/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5685327791915008
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/apedec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 2250f29..cfcf9a0 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -885,7 +885,7 @@ static av_always_inline int filter_3800(APEPredictor *p, p->coeffsB[filter][1] -= (((d4 >> 30) & 2) - 1) * sign; p->filterB[filter] = p->lastA[filter] + (predictionB >> shift); - p->filterA[filter] = p->filterB[filter] + ((int)(p->filterA[filter] * 31U) >> 5); + p->filterA[filter] = p->filterB[filter] + (unsigned)((int)(p->filterA[filter] * 31U) >> 5); return p->filterA[filter]; } |
