From 72e1eed8abb11c79749266d433c817ce36732893 Mon Sep 17 00:00:00 2001 From: Dmitry Kasatkin Date: Thu, 10 Sep 2015 22:06:15 +0300 Subject: integrity: prevent loading untrusted certificates on the IMA trusted keyring If IMA_LOAD_X509 is enabled, either directly or indirectly via IMA_APPRAISE_SIGNED_INIT, certificates are loaded onto the IMA trusted keyring by the kernel via key_create_or_update(). When the KEY_ALLOC_TRUSTED flag is provided, certificates are loaded without first verifying the certificate is properly signed by a trusted key on the system keyring. This patch removes the KEY_ALLOC_TRUSTED flag. Signed-off-by: Dmitry Kasatkin Cc: # 3.19+ Signed-off-by: Mimi Zohar --- security/integrity/digsig.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index 36fb6b527829..5be9ffbe90ba 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -105,7 +105,7 @@ int __init integrity_load_x509(const unsigned int id, const char *path) rc, ((KEY_POS_ALL & ~KEY_POS_SETATTR) | KEY_USR_VIEW | KEY_USR_READ), - KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_TRUSTED); + KEY_ALLOC_NOT_IN_QUOTA); if (IS_ERR(key)) { rc = PTR_ERR(key); pr_err("Problem loading X.509 certificate (%d): %s\n", -- cgit v1.2.3