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USB: CDC ACM: Fix NULL pointer dereference
authorSven Schnelle <svens@stackframe.org>
Fri, 17 Aug 2012 19:43:43 +0000 (21:43 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 14 Sep 2012 17:00:22 +0000 (10:00 -0700)
commita9959bb7e1510edb3326beb354e59da0a6a0dab1
tree18857cd073bb4010495b9353d064f9de0ad52057tree | snapshot
parent5750abb9208ee301f0ae9c6c6cb231460feddf0ecommit | diff
USB: CDC ACM: Fix NULL pointer dereference

commit 99f347caa4568cb803862730b3b1f1942639523f upstream.

If a device specifies zero endpoints in its interface descriptor,
the kernel oopses in acm_probe(). Even though that's clearly an
invalid descriptor, we should test wether we have all endpoints.
This is especially bad as this oops can be triggered by just
plugging a USB device in.

Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/class/cdc-acm.c diff | blob | history
Domain: System / Kernel;