tree 9256c52a1e40b593601647bcc1d8d8e588188f77
parent 2c53b436a30867eb6b47dd7bab23ba638d1fb0d2
author Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> 1307940551 +0900
committer James Morris <jmorris@namei.org> 1308028722 +1000

TOMOYO: Fix oops in tomoyo_mount_acl().

In tomoyo_mount_acl() since 2.6.36, kern_path() was called without checking
dev_name != NULL. As a result, an unprivileged user can trigger oops by issuing
mount(NULL, "/", "ext3", 0, NULL) request.
Fix this by checking dev_name != NULL before calling kern_path(dev_name).

Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: stable@kernel.org
Signed-off-by: James Morris <jmorris@namei.org>