Messages in this thread Patch in this message | | | From | Greg Kroah-Hartman <> | Subject | [PATCH 5.2 201/313] media: ttusb-dec: Fix info-leak in ttusb_dec_send_command() | Date | Thu, 3 Oct 2019 17:52:59 +0200 |
| |
From: Tomas Bortoli <tomasbortoli@gmail.com>
[ Upstream commit a10feaf8c464c3f9cfdd3a8a7ce17e1c0d498da1 ]
The function at issue does not always initialize each byte allocated for 'b' and can therefore leak uninitialized memory to a USB device in the call to usb_bulk_msg()
Use kzalloc() instead of kmalloc()
Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+0522702e9d67142379f1@syzkaller.appspotmail.com Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/media/usb/ttusb-dec/ttusb_dec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index 1d0afa340f47c..3198f9624b7c0 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -319,7 +319,7 @@ static int ttusb_dec_send_command(struct ttusb_dec *dec, const u8 command, dprintk("%s\n", __func__); - b = kmalloc(COMMAND_PACKET_SIZE + 4, GFP_KERNEL); + b = kzalloc(COMMAND_PACKET_SIZE + 4, GFP_KERNEL); if (!b) return -ENOMEM; -- 2.20.1
| |