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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-04 19:55:28 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-09 13:59:05 +0200 |
| commit | 5240beb4c591994282107af8aceea133e21de233 (patch) | |
| tree | fdded7e5f5d148c0910e70c57ea96388a616108b | |
| parent | 29d6be42d1f4a79dbec05d0dee67bc7ef8d878e0 (diff) | |
| download | ffmpeg-5240beb4c591994282107af8aceea133e21de233.tar.gz | |
avcodec/apedec: Fix 2 integer overflows in filter_3800()
Fixes: signed integer overflow: 1683879955 - -466265224 cannot be represented in type 'int'
Fixes: 37419/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APE_fuzzer-6074294407921664
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 33feb527fff9bf547c4118147434869875cf0c3d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/apedec.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/apedec.c b/libavcodec/apedec.c index 3bec1eee68..e11ee0a708 100644 --- a/libavcodec/apedec.c +++ b/libavcodec/apedec.c @@ -859,8 +859,8 @@ static av_always_inline int filter_3800(APEPredictor *p, return predictionA; } d2 = p->buf[delayA]; - d1 = (p->buf[delayA] - p->buf[delayA - 1]) * 2U; - d0 = p->buf[delayA] + ((p->buf[delayA - 2] - p->buf[delayA - 1]) * 8U); + d1 = (p->buf[delayA] - (unsigned)p->buf[delayA - 1]) * 2; + d0 = p->buf[delayA] + ((p->buf[delayA - 2] - (unsigned)p->buf[delayA - 1]) * 8); d3 = p->buf[delayB] * 2U - p->buf[delayB - 1]; d4 = p->buf[delayB]; |