mirror of https://git.ffmpeg.org/ffmpeg.git
avcodec/dirac_dwt: Fix integer overflow in COMPOSE_DD97iH0() and COMPOSE_DD137iL0()
Fixes: runtime error: signed integer overflow: 2147483646 + 33554433 cannot be represented in type 'int' Fixes: 4563/clusterfuzz-testcase-minimized-5438979567517696 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
2a111c99a6
commit
4d70fbeec8
|
@ -99,10 +99,10 @@ void ff_spatial_idwt_slice2(DWTContext *d, int y);
|
|||
(b1 + ((int)(b0 + (unsigned)(b2) + 1) >> 1))
|
||||
|
||||
#define COMPOSE_DD97iH0(b0, b1, b2, b3, b4)\
|
||||
(b2 + ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 8) >> 4))
|
||||
(int)(((unsigned)(b2) + ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 8) >> 4)))
|
||||
|
||||
#define COMPOSE_DD137iL0(b0, b1, b2, b3, b4)\
|
||||
(b2 - ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 16) >> 5))
|
||||
(int)(((unsigned)(b2) - ((int)(-b0 + 9U*b1 + 9U*b3 - b4 + 16) >> 5)))
|
||||
|
||||
#define COMPOSE_HAARiL0(b0, b1)\
|
||||
(b0 - ((b1 + 1) >> 1))
|
||||
|
|
Loading…
Reference in New Issue