ffmpeg | branch: release/3.1 | Michael Niedermayer <mich...@niedermayer.cc> | Sun Sep 10 01:32:50 2017 +0200| [10ae5fb2696103f46d74f069f7187883873002a6] | committer: Michael Niedermayer
avcodec/diracdec: Fix overflow in DC computation Fixes: runtime error: signed integer overflow: 11896 + 2147483646 cannot be represented in type 'int' Fixes: 3053/clusterfuzz-testcase-minimized-6355082062856192 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 b5995856a4236c27f231210bb08d70688e045192) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=10ae5fb2696103f46d74f069f7187883873002a6 --- libavcodec/diracdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/diracdec.c b/libavcodec/diracdec.c index f92ff1b2ea..4f6de7af3d 100644 --- a/libavcodec/diracdec.c +++ b/libavcodec/diracdec.c @@ -1343,7 +1343,7 @@ static void decode_block_params(DiracContext *s, DiracArith arith[8], DiracBlock if (!block->ref) { pred_block_dc(block, stride, x, y); for (i = 0; i < 3; i++) - block->u.dc[i] += dirac_get_arith_int(arith+1+i, CTX_DC_F1, CTX_DC_DATA); + block->u.dc[i] += (unsigned)dirac_get_arith_int(arith+1+i, CTX_DC_F1, CTX_DC_DATA); return; } _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
