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| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-14 16:37:32 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-06-18 01:16:04 +0200 |
| commit | d946e7b805e21e62a69e1e290d98a494db863e69 (patch) | |
| tree | 699b2f9db6310fa1644eb1836b8278489cc00290 | |
| parent | 84d473a9cfc61c4b4f1557f41462d02088b94614 (diff) | |
| download | ffmpeg-d946e7b805e21e62a69e1e290d98a494db863e69.tar.gz | |
avcodec/dirac_dwt_template: Fix undefined behavior in interleave()
Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 8697/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DIRAC_fuzzer-5197148130902016
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 575d8ca0260fabac29e5b3541154633569ce2b5d)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dirac_dwt_template.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/dirac_dwt_template.c b/libavcodec/dirac_dwt_template.c index 8c25c1f822..528fc7e9e7 100644 --- a/libavcodec/dirac_dwt_template.c +++ b/libavcodec/dirac_dwt_template.c @@ -57,8 +57,8 @@ static av_always_inline void RENAME(interleave)(TYPE *dst, TYPE *src0, TYPE *src { int i; for (i = 0; i < w2; i++) { - dst[2*i ] = (src0[i] + add) >> shift; - dst[2*i+1] = (src1[i] + add) >> shift; + dst[2*i ] = (src0[i] + (unsigned)add) >> shift; + dst[2*i+1] = (src1[i] + (unsigned)add) >> shift; } } |