[PATCH] Keys: Fix permissions check for update vs add

Permit add_key() to once again update a matching key rather than adding a
new one if a matching key already exists in the target keyring.

This bug causes add_key() to always add a new key, displacing the old from
the target keyring.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index c7a0ab1cfda3..4e9fa8be44b8 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -526,7 +526,7 @@ key_ref_t __keyring_search_one(key_ref_t keyring_ref,
                             (!key->type->match ||
                              key->type->match(key, description)) &&
                             key_permission(make_key_ref(key, possessed),
-                                           perm) < 0 &&
+                                           perm) == 0 &&
                             !test_bit(KEY_FLAG_REVOKED, &key->flags)
                             )
                                 goto found;