From: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Date: Mon, 13 Jun 2011 04:49:11 +0000 (+0900)
Subject: TOMOYO: Fix oops in tomoyo_mount_acl().
X-Git-Tag: v3.0-rc4~94^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4e78c724d47e2342aa8fde61f6b8536f662f795f;p=pandora-kernel.git

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>
---

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