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can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devices

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Uninitialized Kernel memory can leak to USB devices.

Fix by using kzalloc() instead of kmalloc() on the affected buffers.

Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com>
Reported-by: syzbot+d6a5a1a3657b596ef132@syzkaller.appspotmail.com
Fixes: f14e22435a ("net: can: peak_usb: Do not do dma on the stack")
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Tomas Bortoli 2019-07-31 10:54:47 -04:00 committed by Marc Kleine-Budde
parent 30a8beeb30
commit ead16e53c2
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/usb/peak_usb/pcan_usb_pro.c
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@ -494,7 +494,7 @@ static int pcan_usb_pro_drv_loaded(struct peak_usb_device *dev, int loaded)
u8 *buffer;
int err;
buffer = kmalloc(PCAN_USBPRO_FCT_DRVLD_REQ_LEN, GFP_KERNEL);
buffer = kzalloc(PCAN_USBPRO_FCT_DRVLD_REQ_LEN, GFP_KERNEL);
if (!buffer)
return -ENOMEM;