From: Eric Biggers <ebigg...@google.com>
If key_instantiate_and_link() were to fail (which fortunately isn't
possible currently), the call to key_revoke(authkey) would crash with a
NULL pointer dereference in request_key_auth_revoke() because the key
has not yet been instantiated.
Fix this by removing the call to key_revoke(). key_put() is sufficient,
as it's not possible for an uninstantiated authkey to have been used for
anything yet.
Fixes: b5f545c880a2 ("[PATCH] keys: Permit running process to instantiate keys")
Signed-off-by: Eric Biggers <ebigg...@google.com>
---
security/keys/request_key_auth.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/security/keys/request_key_auth.c b/security/keys/request_key_auth.c
index 8f12645945ca..2df92b619a38 100644
--- a/security/keys/request_key_auth.c
+++ b/security/keys/request_key_auth.c
@@ -220,7 +220,6 @@ struct key *request_key_auth_new(struct key *target, const
void *callout_info,
return authkey;
error_put_authkey:
- key_revoke(authkey);
key_put(authkey);
error_free_rka:
free_request_key_auth(rka);
--
2.14.1.821.g8fa685d3b7-goog
