diff options
| author | Tomas Bortoli <tomasbortoli@gmail.com> | 2019-07-31 12:19:05 -0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-12-10 18:01:38 +0000 |
| commit | 89577bea6adf8cd2a1b97c91f7266bb56aa181b0 (patch) | |
| tree | 3e4cae8d79b04955742dbaaf65cb1e0be4579bc9 | |
| parent | f703c175f8e428959a33cdadb3e09986f14390ce (diff) | |
media: ttusb-dec: Fix info-leak in ttusb_dec_send_command()
commit a10feaf8c464c3f9cfdd3a8a7ce17e1c0d498da1 upstream.
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: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/media/usb/ttusb-dec/ttusb_dec.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/usb/ttusb-dec/ttusb_dec.c b/drivers/media/usb/ttusb-dec/ttusb_dec.c index 29724af9b9ab..ab0098ce4bbb 100644 --- a/drivers/media/usb/ttusb-dec/ttusb_dec.c +++ b/drivers/media/usb/ttusb-dec/ttusb_dec.c @@ -272,7 +272,7 @@ 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; |