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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-12 13:05:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-14 00:21:50 +0200 |
| commit | ee92ea890388cac50db2a4334c702c2f47bdca5b (patch) | |
| tree | 17264cfcae5b0604327361b887864faaccbb3540 | |
| parent | 256b9442df2cd76e48f5086f77c85e9c0c3e4209 (diff) | |
| download | ffmpeg-ee92ea890388cac50db2a4334c702c2f47bdca5b.tar.gz | |
avcodec/wmv2dsp: Fix runtime error: signed integer overflow: 181 * -17047030 cannot be represented in type 'int'
Fixes: 1503/clusterfuzz-testcase-minimized-5369271855087616
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit df640dbbc949d0f4deefaf43e86b8bd50ae997cc)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/wmv2dsp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/libavcodec/wmv2dsp.c b/libavcodec/wmv2dsp.c index 7a3a851861..543f01b852 100644 --- a/libavcodec/wmv2dsp.c +++ b/libavcodec/wmv2dsp.c @@ -48,8 +48,8 @@ static void wmv2_idct_row(short * b) a4 = W0 * b[0] - W0 * b[4]; /* step 2 */ - s1 = (181 * (a1 - a5 + a7 - a3) + 128) >> 8; // 1, 3, 5, 7 - s2 = (181 * (a1 - a5 - a7 + a3) + 128) >> 8; + s1 = (int)(181U * (a1 - a5 + a7 - a3) + 128) >> 8; // 1, 3, 5, 7 + s2 = (int)(181U * (a1 - a5 - a7 + a3) + 128) >> 8; /* step 3 */ b[0] = (a0 + a2 + a1 + a5 + (1 << 7)) >> 8; |