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ALSA: usb-audio: fix null pointer dereference on pointer cs_desc
authorChengfeng Ye <cyeaa@connect.ust.hk>
Sun, 24 Oct 2021 11:17:36 +0000 (04:17 -0700)
committerTakashi Iwai <tiwai@suse.de>
Tue, 26 Oct 2021 06:05:23 +0000 (08:05 +0200)
commitb97053df0f04747c3c1e021ecbe99db675342954
treedc5a4a5a4562a0c2bf896596860b10945fdba7c6tree | snapshot
parenta0d21bb3279476c777434c40d969ea88ca64f9aacommit | diff
ALSA: usb-audio: fix null pointer dereference on pointer cs_desc

The pointer cs_desc return from snd_usb_find_clock_source could
be null, so there is a potential null pointer dereference issue.
Fix this by adding a null check before dereference.

Signed-off-by: Chengfeng Ye <cyeaa@connect.ust.hk>
Link: https://lore.kernel.org/r/20211024111736.11342-1-cyeaa@connect.ust.hk
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/usb/clock.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git