[Devel] [PATCH 3/3] keys: skip keys from another user namespace

Serge E. Hallyn serue at us.ibm.com
Thu Dec 11 15:24:06 PST 2008


When listing keys, do not return keys belonging to the
same uid in another user namespace.  Otherwise uid 500
in another user namespace will return keyrings called
uid.500 for another user namespace.

Signed-off-by: Serge E. Hallyn <serue at us.ibm.com>
---
 security/keys/keyring.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index ed85157..3dba81c 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -539,6 +539,9 @@ struct key *find_keyring_by_name(const char *name, bool skip_perm_check)
 				    &keyring_name_hash[bucket],
 				    type_data.link
 				    ) {
+			if (keyring->user->user_ns != current_user_ns())
+				continue;
+
 			if (test_bit(KEY_FLAG_REVOKED, &keyring->flags))
 				continue;
 
-- 
1.5.4.3

_______________________________________________
Containers mailing list
Containers at lists.linux-foundation.org
https://lists.linux-foundation.org/mailman/listinfo/containers




More information about the Devel mailing list