linux-kernel - [097/129] TOMOYO: Accept \000 as a valid character.

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Message-Id: <20120124023932.566998891@clark.kroah.org>
Date:	Mon, 23 Jan 2012 18:35:17 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	James Morris <jmorris@...ei.org>
Subject: [097/129] TOMOYO: Accept \000 as a valid character.

3.2-stable review patch.  If anyone has any objections, please let me know.

------------------
Content-Length: 1152
Lines: 37

From: Tetsuo Handa <from-tomoyo-users-en@...ove.SAKURA.ne.jp>

commit 25add8cf99c9ec8b8dc0acd8b9241e963fc0d29c upstream.

TOMOYO 2.5 in Linux 3.2 and later handles Unix domain socket's address.
Thus, tomoyo_correct_word2() needs to accept \000 as a valid character, or
TOMOYO 2.5 cannot handle Unix domain's abstract socket address.

Reported-by: Steven Allen <steven@...balien.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@...ei.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 security/tomoyo/util.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/security/tomoyo/util.c
+++ b/security/tomoyo/util.c
@@ -492,13 +492,13 @@ static bool tomoyo_correct_word2(const c
 				if (d < '0' || d > '7' || e < '0' || e > '7')
 					break;
 				c = tomoyo_make_byte(c, d, e);
-				if (tomoyo_invalid(c))
-					continue; /* pattern is not \000 */
+				if (c <= ' ' || c >= 127)
+					continue;
 			}
 			goto out;
 		} else if (in_repetition && c == '/') {
 			goto out;
-		} else if (tomoyo_invalid(c)) {
+		} else if (c <= ' ' || c >= 127) {
 			goto out;
 		}
 	}


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