avcodec/snowdec: Fix integer overflow with motion vector residual
authorMichael Niedermayer <michael@niedermayer.cc>
Mon, 20 Aug 2018 18:15:19 +0000 (20:15 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Sun, 18 Nov 2018 01:20:44 +0000 (02:20 +0100)
commitc6b7060137cfdf5536df95bb8e58bd30acc90b89
tree58714aed1eed05af4c18f9971a47da999afedbce
parent5d7bab77de261dd70218ac311a8536b4d42b98e8
avcodec/snowdec: Fix integer overflow with motion vector residual

Fixes: signed integer overflow: -19818 + -2147483648 cannot be represented in type 'int'
Fixes: 9545/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SNOW_fuzzer-4928769537081344

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit acba153a148782c08f9fd17f0c05b93468f3cbd0)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/snowdec.c