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author | David Howells <dhowells@redhat.com> | 2006-04-10 15:15:21 +0100 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-10 09:33:46 -0700 |
commit | c3a9d6541f84ac3ff566982d08389b87c1c36b4e (patch) | |
tree | 161e507b276105b35dadf0c2637be9f018b0f664 /mm/Makefile | |
parent | 460fbf82c0842cad3f3c744c4dcb81978b7829f3 (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/Makefile')
0 files changed, 0 insertions, 0 deletions