avcodec/alac: Fix integer overflow in lpc_prediction() with sign
authorMichael Niedermayer <michael@niedermayer.cc>
Fri, 8 Nov 2019 19:40:46 +0000 (20:40 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Sun, 1 Dec 2019 16:17:04 +0000 (17:17 +0100)
commit7686ba1f149a94c3bac235589de8aa8db92be4e5
tree76b86a76051ea93567cf4c247866aaeed0b6df92
parent589cb44498b5e9683c95746255a2abd6d1e74f94
avcodec/alac: Fix integer overflow in lpc_prediction() with sign

Fixes: signed integer overflow: -2147483648 * -1 cannot be represented in type 'int'
Fixes: 18643/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ALAC_fuzzer-5672182449700864

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/alac.c