USB: iowarrior: fix oops with malicious USB descriptors
authorJosh Boyer <jwboyer@fedoraproject.org>
Mon, 14 Mar 2016 14:42:38 +0000 (10:42 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 18 Mar 2016 16:19:02 +0000 (09:19 -0700)
commit4ec0ef3a82125efc36173062a50624550a900ae0
tree0c48322a62e4da535ed60d72092d101fefede8d7
parent48d10bda1f2c69980601a61194015bb0790fb7ab
USB: iowarrior: fix oops with malicious USB descriptors

The iowarrior driver expects at least one valid endpoint.  If given
malicious descriptors that specify 0 for the number of endpoints,
it will crash in the probe function.  Ensure there is at least
one endpoint on the interface before using it.

The full report of this issue can be found here:
http://seclists.org/bugtraq/2016/Mar/87

Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/misc/iowarrior.c