path: root/mm
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authorDavid Howells <dhowells@redhat.com>2006-04-10 15:15:21 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-10 09:33:46 -0700
commitc3a9d6541f84ac3ff566982d08389b87c1c36b4e (patch)
tree161e507b276105b35dadf0c2637be9f018b0f664 /mm
parentMerge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 (diff)
[Security] Keys: Fix oops when adding key to non-keyring
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>
Diffstat (limited to 'mm')
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