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authorTakashi Iwai <tiwai@suse.de>2017-11-21 17:00:32 +0100
committerTakashi Iwai <tiwai@suse.de>2017-11-21 17:50:31 +0100
commitf658f17b5e0e339935dca23e77e0f3cad591926b (patch)
treebb2746f2604b3c41bd44c9b0f181ed47d6fc86fa /lib/cmdline.c
parentd937cd6790a2bef2d07b500487646bd794c039bb (diff)
ALSA: usb-audio: Fix potential out-of-bound access at parsing SU
The usb-audio driver may trigger an out-of-bound access at parsing a malformed selector unit, as it checks the header length only after evaluating bNrInPins field, which can be already above the given length. Fix it by adding the length check beforehand. Fixes: 99fc86450c43 ("ALSA: usb-mixer: parse descriptors with structs") Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'lib/cmdline.c')
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