path: root/security
diff options
authorEric Biggers <ebiggers@google.com>2017-09-18 11:36:31 -0700
committerDavid Howells <dhowells@redhat.com>2017-09-25 15:19:57 +0100
commit7fc0786d956d9e59b68d282be9b156179846ea3d (patch)
tree0b652a2ec8836a6d101e48a0ba1e07472f636432 /security
parentKEYS: fix key refcount leak in keyctl_assume_authority() (diff)
KEYS: fix key refcount leak in keyctl_read_key()
In keyctl_read_key(), if key_permission() were to return an error code other than EACCES, we would leak a the reference to the key. This can't actually happen currently because key_permission() can only return an error code other than EACCES if security_key_permission() does, only SELinux and Smack implement that hook, and neither can return an error code other than EACCES. But it should still be fixed, as it is a bug waiting to happen. Fixes: 29db91906340 ("[PATCH] Keys: Add LSM hooks for key management [try #3]") Signed-off-by: Eric Biggers <ebiggers@google.com> Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'security')
1 files changed, 1 insertions, 1 deletions
diff --git a/security/keys/keyctl.c b/security/keys/keyctl.c
index 562f7fe287a0..aa1d11a29136 100644
--- a/security/keys/keyctl.c
+++ b/security/keys/keyctl.c
@@ -771,7 +771,7 @@ long keyctl_read_key(key_serial_t keyid, char __user *buffer, size_t buflen)
if (ret == 0)
goto can_read_key;
if (ret != -EACCES)
- goto error;
+ goto error2;
/* we can't; see if it's searchable from this process's keyrings
* - we automatically take account of the fact that it may be