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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-02 19:08:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-07-16 19:02:12 +0200 |
| commit | c4b23793d4fe679168ffba993ef1469491521233 (patch) | |
| tree | 866d844759bab381c7caf7f752bc108f6774752f | |
| parent | e21e5c95c1ceeaf7ca2dd818fd334074ff0148f8 (diff) | |
| download | ffmpeg-c4b23793d4fe679168ffba993ef1469491521233.tar.gz | |
avcodec/shorten: Fix undefined integer overflow
Fixes: signed integer overflow: 8454144 * 256 cannot be represented in type 'int'
Fixes: 8788/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SHORTEN_fuzzer-5728205041303552
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 70832333bba3b915040f415548518e136b44280e)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/shorten.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/shorten.c b/libavcodec/shorten.c index 18a12d0b97..79656e7757 100644 --- a/libavcodec/shorten.c +++ b/libavcodec/shorten.c @@ -177,7 +177,7 @@ static void fix_bitshift(ShortenContext *s, int32_t *buffer) buffer[i] = 0; } else if (s->bitshift != 0) { for (i = 0; i < s->blocksize; i++) - buffer[i] *= 1 << s->bitshift; + buffer[i] *= 1U << s->bitshift; } } |