linux/sound/usb/mixer.c
Takashi Iwai cacb39e5e4 ALSA: usb-audio: Avoid access before bLength check in build_audio_procunit()
commit f4351a199c upstream.

The parser for the processing unit reads bNrInPins field before the
bLength sanity check, which may lead to an out-of-bound access when a
malformed descriptor is given.  Fix it by assignment after the bLength
check.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2019-05-02 21:41:10 +01:00

2611 lines
68 KiB