The mok keyring is setup during init. No additional keys should be allowed
to be added afterwards. Leave the permission as read only.
Signed-off-by: Eric Snowberg <[email protected]>
---
v2: Initial version
---
security/integrity/digsig.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index be4860c596b9..3a12cc85b528 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -145,7 +145,8 @@ int __init integrity_init_keyring(const unsigned int id)
else
restriction->check = restrict_link_to_ima;
- perm |= KEY_USR_WRITE;
+ if (id != INTEGRITY_KEYRING_MOK)
+ perm |= KEY_USR_WRITE;
out:
return __integrity_init_keyring(id, perm, restriction);
--
2.18.4