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| From: | LINUX | | Date: | 12.04.2006 | | Subject: | ChangeLog-2.6.16.3 |
commit e2c78fb27dd13ab8c778a9689affe95c92030a32
Author: Greg Kroah-Hartman <gregkh@suse.de>
Date: Mon Apr 10 22:27:44 2006 -0700
Linux 2.6.16.3
commit 5494bd6a500cc7c5a502279eabfbdacccd4b89d1
Author: David Howells <dhowells@redhat.com>
Date: Mon Apr 10 17:01:40 2006 +0000
[PATCH] Keys: Fix oops when adding key to non-keyring [CVE-2006-1522]
This fixes the problem of an oops occuring when a user attempts to add a
key to a non-keyring key [CVE-2006-1522].
The problem is that __keyring_search_one() doesn't check that the
keyring it's been given is actually a keyring.
I've fixed this problem by:
(1) declaring that caller of __keyring_search_one() must guarantee that
the keyring is a keyring; and
(2) making key_create_or_update() check that the keyring is a keyring,
and return -ENOTDIR if it isn't.
This can be tested by:
keyctl add user b b `keyctl add user a a @s`
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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