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-rw-r--r--security/keys/request_key.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/security/keys/request_key.c b/security/keys/request_key.c
index 857da65e1940..a6543ed98b1f 100644
--- a/security/keys/request_key.c
+++ b/security/keys/request_key.c
@@ -564,6 +564,16 @@ struct key *request_key_and_link(struct key_type *type,
key_ref = search_process_keyrings(&ctx);
if (!IS_ERR(key_ref)) {
+ if (dest_keyring) {
+ ret = key_task_permission(key_ref, current_cred(),
+ KEY_NEED_LINK);
+ if (ret < 0) {
+ key_ref_put(key_ref);
+ key = ERR_PTR(ret);
+ goto error_free;
+ }
+ }
+
key = key_ref_to_ptr(key_ref);
if (dest_keyring) {
ret = key_link(dest_keyring, key);