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TOMOYO: Fix oops in tomoyo_mount_acl().
authorTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Mon, 13 Jun 2011 04:49:11 +0000 (13:49 +0900)
committerJames Morris <jmorris@namei.org>
Tue, 14 Jun 2011 05:18:42 +0000 (15:18 +1000)
commit4e78c724d47e2342aa8fde61f6b8536f662f795f
tree9256c52a1e40b593601647bcc1d8d8e588188f77tree | snapshot (tar.gz zip)
parent2c53b436a30867eb6b47dd7bab23ba638d1fb0d2commit | diff
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>
security/tomoyo/mount.c diff | blob | blame | history