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USB: cdc-acm: more sanity checking
authorOliver Neukum <oneukum@suse.com>
Tue, 15 Mar 2016 09:14:04 +0000 (10:14 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 12 Apr 2016 16:08:41 +0000 (09:08 -0700)
commit1ea680abf7640c777396909102bc22915107cb5b
tree55d2dbab30cf350f69f9afb020f81ac8b08aa0d0tree | snapshot
parenta85722c650265714c592d7ef99d277106dbb17bbcommit | diff
USB: cdc-acm: more sanity checking

commit 8835ba4a39cf53f705417b3b3a94eb067673f2c9 upstream.

An attack has become available which pretends to be a quirky
device circumventing normal sanity checks and crashes the kernel
by an insufficient number of interfaces. This patch adds a check
to the code path for quirky devices.

Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c diff | blob | history
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