ffmpeg | branch: release/3.2 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jul 26 20:26:43 2017 +0200| [8c7b477b97fb8e9f10886f35dc578a2257567758] | committer: Michael Niedermayer
avcodec/diracdec: Fix integer overflow in signed multiplication in UNPACK_ARITH() Fixes: runtime error: signed integer overflow: 1073741823 * 4 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 8e275a74b09cc87f4334ed572f919b7647d4bea1) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8c7b477b97fb8e9f10886f35dc578a2257567758 --- libavcodec/diracdec.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index e73b998e92..c50a861a95 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -448,7 +448,8 @@ static inline int coeff_unpack_golomb(GetBitContext *gb, int qfactor, int qoffse static inline void coeff_unpack_arith_##n(DiracArith *c, int qfactor, int qoffset, \ SubBand *b, type *buf, int x, int y) \ { \ - int coeff, sign, sign_pred = 0, pred_ctx = CTX_ZPZN_F1; \ + int sign, sign_pred = 0, pred_ctx = CTX_ZPZN_F1; \ + unsigned coeff; \ const int mstride = -(b->stride >> (1+b->pshift)); \ if (b->parent) { \ const type *pbuf = (type *)b->parent->ibuf; \ _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
