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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-11-14 03:40:07 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-08 23:19:14 +0100 |
| commit | 37a14a3d83a3b988c061ef5004141fe49eae33e0 (patch) | |
| tree | c1081189824e5224f53b77b0bf7467655f791a33 | |
| parent | 5fdc6795616461b3b6e1cc7b8913579d4a772ea8 (diff) | |
| download | ffmpeg-37a14a3d83a3b988c061ef5004141fe49eae33e0.tar.gz | |
avcodec/dirac_dwt: Fix integer overflow in COMPOSE_DD137iL0()
Fixes: 4035/clusterfuzz-testcase-minimized-6479308925173760
Fixes: runtime error: signed integer overflow: 9 * 402653183 cannot be represented in type 'int'
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 73964680d7bce6d81ddc553a24d73e9a1c9156f9)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/dirac_dwt.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/dirac_dwt.h b/libavcodec/dirac_dwt.h index 35ed8857e9..f9a9e9e1b3 100644 --- a/libavcodec/dirac_dwt.h +++ b/libavcodec/dirac_dwt.h @@ -102,7 +102,7 @@ void ff_spatial_idwt_slice2(DWTContext *d, int y); (b2 + ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 8) >> 4)) #define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\ - (b2 - ((-b0 + 9*b1 + 9*b3 - b4 + 16) >> 5)) + (b2 - ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 16) >> 5)) #define COMPOSE_HAARiL0(b0, b1)\ (b0 - ((b1 + 1) >> 1)) |