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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-06-26 15:05:08 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2017-07-19 02:45:52 +0200 |
| commit | 34535941ae9440177345c0bb2347ce16a1e80887 (patch) | |
| tree | 5b2023d92748e01a5dc09333b41846ce353cf586 | |
| parent | 3cae97b090e139acfcda6dda7c73f2e607c4f74a (diff) | |
| download | ffmpeg-34535941ae9440177345c0bb2347ce16a1e80887.tar.gz | |
avcodec/jpeg2000dwt: Fix integer overflow in dwt_decode97_int()
Fixes: runtime error: signed integer overflow: -163654656 * 256 cannot be represented in type 'int'
Fixes: 2367/clusterfuzz-testcase-minimized-4648678897745920
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 ea5366670e26b2c6c396e6a5f49827a2b71e6dd6)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/jpeg2000dwt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/jpeg2000dwt.c b/libavcodec/jpeg2000dwt.c index 2bb245d25b..38a578af3d 100644 --- a/libavcodec/jpeg2000dwt.c +++ b/libavcodec/jpeg2000dwt.c @@ -488,7 +488,7 @@ static void dwt_decode97_int(DWTContext *s, int32_t *t) line += 5; for (i = 0; i < w * h; i++) - data[i] *= 1 << I_PRESHIFT; + data[i] *= 1LL << I_PRESHIFT; for (lev = 0; lev < s->ndeclevels; lev++) { int lh = s->linelen[lev][0], |