USB: cdc-acm: more sanity checking

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commit 8835ba4a39 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>

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Oliver Neukum 2016-03-15 10:14:04 +01:00 • committed by Greg Kroah-Hartman

parent a85722c650

commit 1ea680abf7

1 changed files with 3 additions and 0 deletions

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drivers/usb/class/cdc-acm.c

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