diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-17 21:40:59 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-10-06 14:41:42 +0200 |
| commit | e0791ea1b18c0e6b0fa5b3069d10a3d1e2fbd3a4 (patch) | |
| tree | 61a0c25efb61a32da3519dfc00a2c3e5349a8de9 | |
| parent | d2b1cad8b39c60e2d6cb5c83f3ba3b4a16ec9109 (diff) | |
| download | ffmpeg-e0791ea1b18c0e6b0fa5b3069d10a3d1e2fbd3a4.tar.gz | |
avcodec/apedec: Fix integer overflow in filter_fast_3320()
Fixes: signed integer overflow: 2145649668 + 3956526 cannot be represented in type 'int'
Fixes: 38351/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-4647077926273024
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 0e45886e6ea272f453cb949e95c3bfd8380974c5)
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 6ed4a19cab..8bd12f2315 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -852,7 +852,7 @@ static av_always_inline int filter_fast_3320(APEPredictor *p, } predictionA = p->buf[delayA] * 2U - p->buf[delayA - 1]; - p->lastA[filter] = decoded + ((int32_t)(predictionA * p->coeffsA[filter][0]) >> 9); + p->lastA[filter] = decoded + (unsigned)((int32_t)(predictionA * p->coeffsA[filter][0]) >> 9); if ((decoded ^ predictionA) > 0) p->coeffsA[filter][0]++; |