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| author | Michael Niedermayer <michael@niedermayer.cc> | 2019-08-18 00:28:34 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2019-09-02 21:37:18 +0200 |
| commit | 64ac8a6e697e06880e05debd5a0e47254cd8b4ca (patch) | |
| tree | 57aad1cfbfa474ad2e81aa3b6610693ed0184ca0 /libavcodec/apedec.c | |
| parent | 6b57a294a32874c9cdc1de0310cbf1d693b4776f (diff) | |
avcodec/apedec: Fix integer overflow in filter_fast_3320()
Fixes: signed integer overflow: -1094994793 * 2 cannot be represented in type 'int'
Fixes: 16139/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-5663911036059648
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/apedec.c')
| -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 70939abeb4..5d82ff53ff 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -828,7 +828,7 @@ static av_always_inline int filter_fast_3320(APEPredictor *p, return decoded; } - predictionA = p->buf[delayA] * 2 - p->buf[delayA - 1]; + predictionA = p->buf[delayA] * 2U - p->buf[delayA - 1]; p->lastA[filter] = decoded + ((int32_t)(predictionA * p->coeffsA[filter][0]) >> 9); if ((decoded ^ predictionA) > 0) |