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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-11-14 03:40:07 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-01-31 22:56:14 +0100 |
| commit | 813d7f4972333ea6d09c2978cfffc93c4d5e343f (patch) | |
| tree | 123b60afc7f76e80346681f6db670a290f090a2f | |
| parent | ee54354fcd8e6de40e43f95fb1ea79f316ceec3e (diff) | |
| download | ffmpeg-813d7f4972333ea6d09c2978cfffc93c4d5e343f.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 8970a8602a..6992f087f8 100644 --- a/libavcodec/dirac_dwt.h +++ b/libavcodec/dirac_dwt.h @@ -93,7 +93,7 @@ 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)) |