ffmpeg | branch: release/3.0 | Michael Niedermayer <mich...@niedermayer.cc> | Mon Aug 28 00:30:33 2017 +0200| [e89125faba1a1b3048fbd3e58376ce27f9586d9c] | committer: Michael Niedermayer
avcodec/snowdec: Fix integer overflow in decode_subband_slice_buffered() Fixes: runtime error: signed integer overflow: 267 * 8388608 cannot be represented in type 'int' Fixes: 2743/clusterfuzz-testcase-minimized-5820652076400640 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 732f9764561558a388c05483ed6a722a5c67b05c) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e89125faba1a1b3048fbd3e58376ce27f9586d9c --- libavcodec/snowdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/snowdec.c b/libavcodec/snowdec.c index 4ebfa07c6a..0ac0b55012 100644 --- a/libavcodec/snowdec.c +++ b/libavcodec/snowdec.c @@ -140,7 +140,7 @@ static inline void decode_subband_slice_buffered(SnowContext *s, SubBand *b, sli v = b->x_coeff[new_index].coeff; x = b->x_coeff[new_index++].x; while(x < w){ - register int t= ( (v>>1)*qmul + qadd)>>QEXPSHIFT; + register int t= (int)( (v>>1)*(unsigned)qmul + qadd)>>QEXPSHIFT; register int u= -(v&1); line[x] = (t^u) - u; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
