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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-12 13:05:46 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-05-20 03:41:33 +0200 |
| commit | 4ce0554daa102001477813929b3a97913f9a6aa5 (patch) | |
| tree | c895006501e833a985702ae55f9648da635bb4c7 | |
| parent | 53d5e655c762c5e53c1f35713e43fba5559f5d25 (diff) | |
| download | ffmpeg-4ce0554daa102001477813929b3a97913f9a6aa5.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 cfa25f08dc..7b59d10a43 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; |