avcodec/dsddec: Check channels
authorMichael Niedermayer <michael@niedermayer.cc>
Sun, 3 May 2020 22:04:49 +0000 (00:04 +0200)
committerMichael Niedermayer <michael@niedermayer.cc>
Thu, 21 May 2020 13:32:28 +0000 (15:32 +0200)
commit219c025463c4e5634129b73a72a13e0f6ab70150
tree02fc77e70a544b6210c2ea4246734201ae927784
parent53bfdb6fdb3686e6b65e3f94704ab137af992d09
avcodec/dsddec: Check channels

Fixes: division by zero
Fixes: 21677/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DSD_MSBF_fuzzer-5712547983654912
Fixes: 21751/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DSD_LSBF_fuzzer-5197097180856320

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 2570a8777e7095358b10f679d35641e114a2ab33)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
libavcodec/dsddec.c