tree 00ec4109addb2b10f818ee59b3a7f96d201d6596
parent 26b6a59e8b70435996c86f705dfb7f66124f5b1e
author Vasiliy Kulikov <segoon@openwall.com> 1297698563 +0100
committer Paul Gortmaker <paul.gortmaker@windriver.com> 1309106840 -0400

bridge: netfilter: fix information leak

commit d846f71195d57b0bbb143382647c2c6638b04c5a upstream.

Struct tmp is copied from userspace.  It is not checked whether the "name"
field is NULL terminated.  This may lead to buffer overflow and passing
contents of kernel stack as a module name to try_then_request_module() and,
consequently, to modprobe commandline.  It would be seen by all userspace
processes.

Signed-off-by: Vasiliy Kulikov <segoon@openwall.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>