tree 80d2f170443f2c7bc711c7dfaf31f9b19304718b
parent 5efac94999ff218e0101f67a059e44abb4b0b523
author Kees Cook <keescook@chromium.org> 1368222501 -0700
committer John W. Linville <linville@tuxdriver.com> 1371046859 -0400

b43: stop format string leaking into error msgs

The module parameter "fwpostfix" is userspace controllable, unfiltered,
and is used to define the firmware filename. b43_do_request_fw() populates
ctx->errors[] on error, containing the firmware filename. b43err()
parses its arguments as a format string. For systems with b43 hardware,
this could lead to a uid-0 to ring-0 escalation.

CVE-2013-2852

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: John W. Linville <linville@tuxdriver.com>