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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 <tomasbortoli@gmail.com>
Reported-by: syzbot+513e4d0985298538bf9b@syzkaller.appspotmail.com
Fixes: 0a25e1f4f1 ("can: peak_usb: add support for PEAK new CANFD USB adapters")
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
alistair/sunxi64-5.4-dsi
Tomas Bortoli 2019-07-31 10:54:47 -04:00 committed by Marc Kleine-Budde
parent e787f19373
commit 30a8beeb30
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/usb/peak_usb/pcan_usb_fd.c
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@ -841,7 +841,7 @@ 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;