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(parent: 79a575e) | patch
USB: cdc-acm: more sanity checking
authorOliver Neukum <oneukum@suse.com>
Tue, 15 Mar 2016 09:14:04 +0000 (10:14 +0100)
committerBen Hutchings <ben@decadent.org.uk>
Sat, 30 Apr 2016 22:05:19 +0000 (00:05 +0200)
commitc50eccdcbb5df7830e4a0229844a154855ac13ff
tree66ed63eacbe4ac974a444ccd54d8ed8df2f8b489tree | snapshot
parent79a575e829ba789c462c103c54fd9554f60079dbcommit | 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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
drivers/usb/class/cdc-acm.c diff | blob | history
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