android_kernel_samsung_msm8976/sound
Takashi Iwai da5a9a34d0 ALSA: usb-audio: Add sanity checks in v2 clock parsers
commit 0a62d6c966956d77397c32836a5bbfe3af786fc1 upstream.

The helper functions to parse and look for the clock source, selector
and multiplier unit may return the descriptor with a too short length
than required, while there is no sanity check in the caller side.
Add some sanity checks in the parsers, at least, to guarantee the
given descriptor size, for avoiding the potential crashes.

Fixes: 79f920fbff ("ALSA: usb-audio: parse clock topology of UAC2 devices")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2019-07-27 21:46:06 +02:00
..
aoa
arm
atmel
core
drivers
firewire
i2c
isa
mips
oss
parisc
pci
pcmcia
ppc
sh
soc
sparc
spi
synth
usb
ac97_bus.c
Kconfig
last.c
Makefile
sound_core.c
sound_firmware.c