ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Sun Jul 16 02:08:50 2017 +0200| [4de4308d2aa3bfaa286ab566caf087d523cf9a85] | committer: Michael Niedermayer
avcodec/ffv1dec_template: Fix signed integer overflow Fixes: runtime error: negation of -2147483648 cannot be represented in type 'int'; cast to an unsigned type to negate this value to itself Fixes: 2634/clusterfuzz-testcase-minimized-4540890636877824 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=4de4308d2aa3bfaa286ab566caf087d523cf9a85 --- libavcodec/ffv1dec_template.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/ffv1dec_template.c b/libavcodec/ffv1dec_template.c index 36cfba9560..61cdc90116 100644 --- a/libavcodec/ffv1dec_template.c +++ b/libavcodec/ffv1dec_template.c @@ -96,7 +96,7 @@ static av_always_inline void RENAME(decode_line)(FFV1Context *s, int w, } if (sign) - diff = -diff; + diff = -(unsigned)diff; sample[1][x] = av_mod_uintp2(RENAME(predict)(sample[1] + x, sample[0] + x) + (SUINT)diff, bits); } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
