avcodec/utils: Check bits_per_coded_sample
authorMichael Niedermayer <michael@niedermayer.cc>
Tue, 18 Jun 2019 21:55:56 +0000 (23:55 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Wed, 26 Jun 2019 19:41:53 +0000 (21:41 +0200)
commitd33414d2ad27a5d2193c9ab0948ba7a282c2f910
tree351517af9bae0bb0e3531a736236808b226cc15c
parent247a1de7f7d9c5628cf188e677d10ce9e12bd2f2
avcodec/utils: Check bits_per_coded_sample

This avoids the need for each decoder separately having to handle this case

Fixes: shift exponent -100663046 is negative
Fixes: out of array access
Fixes: 15270/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_IFF_ILBM_fuzzer-5727829913763840

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