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ALSA: rawmidi: Initialize allocated buffers
authorTakashi Iwai <tiwai@suse.de>
Mon, 3 Sep 2018 13:16:43 +0000 (15:16 +0200)
committerTakashi Iwai <tiwai@suse.de>
Mon, 3 Sep 2018 13:16:43 +0000 (15:16 +0200)
commit1124e6a1aa0d66b2003d60b0708253434d1cba47
tree7fcc7ecd8dee882d67f5f810eea08dfc38b866b3tree | snapshot
parent87e202b326428ecaa981a93291d37ba501b5004ecommit | diff
ALSA: rawmidi: Initialize allocated buffers

syzbot reported the uninitialized value exposure in certain situations
using virmidi loop.  It's likely a very small race at writing and
reading, and the influence is almost negligible.  But it's safer to
paper over this just by replacing the existing kvmalloc() with
kvzalloc().

Reported-by: syzbot+194dffdb8b22fc5d207a@syzkaller.appspotmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/rawmidi.c diff | blob | history
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