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>
Mon, 22 Oct 2018 23:44:40 +0000 (01:44 +0200)
commit22f743e60201c3cc70dde007e69b03f0e35d267a
tree4bd5e55ae21d33dbc1c26f6021c4f93db1f07a14
parent172bb520c98fa96129d909dc9b6c6872702571b6
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