cdc-acm: add sanity checks
authorOliver Neukum <oneukum@suse.de>
Wed, 28 Jan 2015 10:14:55 +0000 (11:14 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Sat, 9 May 2015 22:16:14 +0000 (23:16 +0100)
commit5b013a6d6593cd1c6a5b8e27b0bd11765b547896
tree8ea602adbc9980f32514f62f2f3ac636136a29a3
parent8801366e8d331dc84697211ea325fee207787be1
cdc-acm: add sanity checks

commit 7e860a6e7aa62b337a61110430cd633db5b0d2dd upstream.

Check the special CDC headers for a plausible minimum length.
Another big operating systems ignores such garbage.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Reviewed-by: Adam Lee <adam8157@gmail.com>
Tested-by: Adam Lee <adam8157@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/usb/class/cdc-acm.c