linux-kernel - [ 051/150] ALSA: usb/quirks, fix out-of-bounds access

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Date:	Tue, 26 Feb 2013 15:55:08 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jiri Slaby <jslaby@...e.cz>,
	Takashi Iwai <tiwai@...e.de>
Subject: [ 051/150] ALSA: usb/quirks, fix out-of-bounds access

3.8-stable review patch.  If anyone has any objections, please let me know.

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

From: Jiri Slaby <jslaby@...e.cz>

commit 4909a0caabb8b4352efcea223e58b86f8bc1f98b upstream.

bootresponse in snd_usb_mbox2_boot_quirk is only 12 (decimal) u8's
long, but i9s passed to snd_usb_ctl_msg as it would be 0x12 (hexa)
long. Fix that by having proper size of the array, i.e. 0x12.

Signed-off-by: Jiri Slaby <jslaby@...e.cz>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 sound/usb/quirks.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -533,7 +533,7 @@ static int snd_usb_mbox2_boot_quirk(stru
 {
 	struct usb_host_config *config = dev->actconfig;
 	int err;
-	u8 bootresponse[12];
+	u8 bootresponse[0x12];
 	int fwsize;
 	int count;
 


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