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 <[email protected]> --- 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 [email protected] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
