diff options
| author | Michael Niedermayer <[email protected]> | 2018-07-02 19:08:54 +0200 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2018-07-16 19:16:13 +0200 |
| commit | 739e3ff47533746a72fd212eae4af009144921c6 (patch) | |
| tree | d0a70c730238fe142608d6f1412b19447a73641a | |
| parent | bba9bb735a535c9e6bf21fd3457913d7fe831e2e (diff) | |
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 <[email protected]>
(cherry picked from commit 70832333bba3b915040f415548518e136b44280e)
Signed-off-by: Michael Niedermayer <[email protected]>
| -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 42d91a4636..609ff0e26f 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; } } |