diff options
| -rw-r--r-- | security/keys/encrypted-keys/encrypted.c | 2 | ||||
| -rw-r--r-- | security/keys/trusted.c | 5 | ||||
| -rw-r--r-- | security/keys/user_defined.c | 5 |
3 files changed, 10 insertions, 2 deletions
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c index 927db9f35ad6..696ccfa08d10 100644 --- a/security/keys/encrypted-keys/encrypted.c +++ b/security/keys/encrypted-keys/encrypted.c @@ -845,6 +845,8 @@ static int encrypted_update(struct key *key, struct key_preparsed_payload *prep) size_t datalen = prep->datalen; int ret = 0; + if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) + return -ENOKEY; if (datalen <= 0 || datalen > 32767 || !prep->data) return -EINVAL; diff --git a/security/keys/trusted.c b/security/keys/trusted.c index 903dace648a1..16dec53184b6 100644 --- a/security/keys/trusted.c +++ b/security/keys/trusted.c @@ -1007,13 +1007,16 @@ static void trusted_rcu_free(struct rcu_head *rcu) */ static int trusted_update(struct key *key, struct key_preparsed_payload *prep) { - struct trusted_key_payload *p = key->payload.data[0]; + struct trusted_key_payload *p; struct trusted_key_payload *new_p; struct trusted_key_options *new_o; size_t datalen = prep->datalen; char *datablob; int ret = 0; + if (test_bit(KEY_FLAG_NEGATIVE, &key->flags)) + return -ENOKEY; + p = key->payload.data[0]; if (!p->migratable) return -EPERM; if (datalen <= 0 || datalen > 32767 || !prep->data) diff --git a/security/keys/user_defined.c b/security/keys/user_defined.c index 28cb30f80256..8705d79b2c6f 100644 --- a/security/keys/user_defined.c +++ b/security/keys/user_defined.c @@ -120,7 +120,10 @@ int user_update(struct key *key, struct key_preparsed_payload *prep) if (ret == 0) { /* attach the new data, displacing the old */ - zap = key->payload.data[0]; + if (!test_bit(KEY_FLAG_NEGATIVE, &key->flags)) + zap = key->payload.data[0]; + else + zap = NULL; rcu_assign_keypointer(key, upayload); key->expiry = 0; } |