Commit 6bd94e3b authored by Dongxiang Ke's avatar Dongxiang Ke Committed by Jialin Zhang
Browse files

ALSA: usb-audio: Fix an out-of-bounds bug in __snd_usb_parse_audio_interface()

stable inclusion
from stable-v5.10.143
commit 6123bec8480d23369e2ee0b2208611619f269faf
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0U6

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6123bec8480d23369e2ee0b2208611619f269faf



--------------------------------

commit e53f47f6 upstream.

There may be a bad USB audio device with a USB ID of (0x04fa, 0x4201) and
the number of it's interfaces less than 4, an out-of-bounds read bug occurs
when parsing the interface descriptor for this device.

Fix this by checking the number of interfaces.

Signed-off-by: default avatarDongxiang Ke <kdx.glider@gmail.com>
Link: https://lore.kernel.org/r/20220906024928.10951-1-kdx.glider@gmail.com


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
Reviewed-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 6df89c5e
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