avcodec/mdct_*: Fix integer overflow in addition in RESCALE()
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 5 Nov 2017 20:20:06 +0000 (21:20 +0100)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 31 Jan 2018 21:56:14 +0000 (22:56 +0100)
commitcd01fc76c4060773e8e025a9ae73218cbea120cf
tree31f5eed0d37b6ae0605f177d5afa214867845993
parent7de06077c9fb2e85fbcb48929ff118662d242ca3
avcodec/mdct_*: Fix integer overflow in addition in RESCALE()

Fixes: runtime error: signed integer overflow: 1219998458 - -1469874012 cannot be represented in type 'int'
Fixes: 3443/clusterfuzz-testcase-minimized-5369987105554432

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 770c934fa1635f4fadf5db4fc5cc5ad15d82455a)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/mdct_fixed.c
libavcodec/mdct_template.c