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

Uninitialized Kernel memory can leak to USB devices.

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

Signed-off-by: Tomas Bortoli <[email protected]>
Reported-by: [email protected]
Fixes: 0a25e1f ("can: peak_usb: add support for PEAK new CANFD USB adapters")
Cc: linux-stable <[email protected]>
Signed-off-by: Marc Kleine-Budde <[email protected]>

Orabug: 31351221
CVE: CVE-2019-19535
(cherry picked from commit 30a8bee)
Signed-off-by: Dan Duval <[email protected]>
Reviewed-by: Jack Vogel <[email protected]>
Signed-off-by: Brian Maly <[email protected]>

Author: Tomas Bortoli

drivers/net/can/usb/peak_usb/pcan_usb_fd.c

@@ -850,7 +850,7 @@ static int pcan_usb_fd_init(struct peak_usb_device *dev)
 			goto err_out;
 
 		/* allocate command buffer once for all for the interface */
-		pdev->cmd_buffer_addr = kmalloc(PCAN_UFD_CMD_BUFFER_SIZE,
+		pdev->cmd_buffer_addr = kzalloc(PCAN_UFD_CMD_BUFFER_SIZE,
 						GFP_KERNEL);
 		if (!pdev->cmd_buffer_addr)
 			goto err_out_1;