ffmpeg | branch: release/3.1 | Michael Niedermayer <mich...@niedermayer.cc> | Thu Jul 27 23:49:27 2017 +0200| [6b1c71040d170c66b20d214a17aacefc215cd9c5] | committer: Michael Niedermayer
avcodec/diracdec: Fix integer overflow in divide3() Fixes: runtime error: signed integer overflow: -1073746548 * 21845 cannot be represented in type 'int' Fixes: 2729/clusterfuzz-testcase-minimized-5902915464069120 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 c0220c768c7fc933a76c863ebbb0abdf68a88533) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6b1c71040d170c66b20d214a17aacefc215cd9c5 --- libavcodec/diracdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index 160085f852..42518c2681 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -231,7 +231,7 @@ enum dirac_subband { /* magic number division by 3 from schroedinger */ static inline int divide3(int x) { - return ((x+1)*21845 + 10922) >> 16; + return (int)((x+1U)*21845 + 10922) >> 16; } static DiracFrame *remove_frame(DiracFrame *framelist[], int picnum) _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
