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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-07-29 15:55:36 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-17 12:21:32 +0200 |
| commit | 19938f1a11355a199135c7411eab5fbf026a4ffb (patch) | |
| tree | 694a8ccc1a532ece59edf05709cded241f210553 | |
| parent | 892ceb512f0f10f6cdb7edb4446efbb0ae5b94ed (diff) | |
| download | ffmpeg-19938f1a11355a199135c7411eab5fbf026a4ffb.tar.gz | |
avcodec/diracdsp: fix integer overflow
Fixes: runtime error: signed integer overflow: 11 * 225726413 cannot be represented in type 'int'
Fixes: 2764/clusterfuzz-testcase-minimized-5382561922547712
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 b2d9d7226943d6229a17e31714ce5162bdf88b33)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/diracdsp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c index cd1209e209..8bc79b788c 100644 --- a/libavcodec/diracdsp.c +++ b/libavcodec/diracdsp.c @@ -199,7 +199,7 @@ static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t s for (i = 0; i < tot_h; i++) { \ c = *src_r++; \ sign = FFSIGN(c)*(!!c); \ - c = (FFABS(c)*qf + qs) >> 2; \ + c = (FFABS(c)*(unsigned)qf + qs) >> 2; \ *dst_r++ = c*sign; \ } \ src += tot_h << (sizeof(PX) >> 1); \ |