ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Fri Aug 18 16:42:58 2017 +0200| [a165b53daa8a3a526d2328ca72c4aa9e7f163045] | committer: Michael Niedermayer
avcodec/dirac_dwt_template: Fix integer overflow in vertical_compose53iL0() Fixes: runtime error: signed integer overflow: 2147483646 + 2 cannot be represented in type 'int' Fixes: 3013/clusterfuzz-testcase-minimized-4644084197097472 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a165b53daa8a3a526d2328ca72c4aa9e7f163045 --- libavcodec/dirac_dwt_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/dirac_dwt_template.c b/libavcodec/dirac_dwt_template.c index 972c711cff..e436c247a1 100644 --- a/libavcodec/dirac_dwt_template.c +++ b/libavcodec/dirac_dwt_template.c @@ -49,7 +49,7 @@ static void RENAME(vertical_compose53iL0)(uint8_t *_b0, uint8_t *_b1, uint8_t *_ TYPE *b1 = (TYPE *)_b1; TYPE *b2 = (TYPE *)_b2; for (i = 0; i < width; i++) - b1[i] -= (b0[i] + b2[i] + 2) >> 2; + b1[i] -= (int)(b0[i] + (unsigned)b2[i] + 2) >> 2; } static av_always_inline void RENAME(interleave)(TYPE *dst, TYPE *src0, TYPE *src1, int w2, _______________________________________________ ffmpeg-cvslog mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
