3.17.0-300.fc21.gnu

1 files changed, 83 insertions, 0 deletions

diff --git a/freed-ora/current/f21/MODSIGN-Support-not-importing-certs-from-db.patch b/freed-ora/current/f21/MODSIGN-Support-not-importing-certs-from-db.patch
new file mode 100644
index 000000000..6ed99e627
--- /dev/null
+++ b/freed-ora/current/f21/MODSIGN-Support-not-importing-certs-from-db.patch
@@ -0,0 +1,83 @@
+From: Josh Boyer <jwboyer@fedoraproject.org>
+Date: Thu, 3 Oct 2013 10:14:23 -0400
+Subject: [PATCH] MODSIGN: Support not importing certs from db
+
+If a user tells shim to not use the certs/hashes in the UEFI db variable
+for verification purposes, shim will set a UEFI variable called MokIgnoreDB.
+Have the uefi import code look for this and not import things from the db
+variable.
+
+Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
+---
+ kernel/modsign_uefi.c | 40 +++++++++++++++++++++++++++++++---------
+ 1 file changed, 31 insertions(+), 9 deletions(-)
+
+diff --git a/kernel/modsign_uefi.c b/kernel/modsign_uefi.c
+index 94b0eb38a284..ae28b974d49a 100644
+--- a/kernel/modsign_uefi.c
++++ b/kernel/modsign_uefi.c
+@@ -8,6 +8,23 @@
+ #include <keys/system_keyring.h>
+ #include "module-internal.h"
+ 
++static __init int check_ignore_db(void)
++{
++	efi_status_t status;
++	unsigned int db = 0;
++	unsigned long size = sizeof(db);
++	efi_guid_t guid = EFI_SHIM_LOCK_GUID;
++
++	/* Check and see if the MokIgnoreDB variable exists.  If that fails
++	 * then we don't ignore DB.  If it succeeds, we do.
++	 */
++	status = efi.get_variable(L"MokIgnoreDB", &guid, NULL, &size, &db);
++	if (status != EFI_SUCCESS)
++		return 0;
++
++	return 1;
++}
++
+ static __init void *get_cert_list(efi_char16_t *name, efi_guid_t *guid, unsigned long *size)
+ {
+ 	efi_status_t status;
+@@ -47,23 +64,28 @@ static int __init load_uefi_certs(void)
+ 	efi_guid_t mok_var = EFI_SHIM_LOCK_GUID;
+ 	void *db = NULL, *dbx = NULL, *mok = NULL;
+ 	unsigned long dbsize = 0, dbxsize = 0, moksize = 0;
+-	int rc = 0;
++	int ignore_db, rc = 0;
+ 
+ 	/* Check if SB is enabled and just return if not */
+ 	if (!efi_enabled(EFI_SECURE_BOOT))
+ 		return 0;
+ 
++	/* See if the user has setup Ignore DB mode */
++	ignore_db = check_ignore_db();
++
+ 	/* Get db, MokListRT, and dbx.  They might not exist, so it isn't
+ 	 * an error if we can't get them.
+ 	 */
+-	db = get_cert_list(L"db", &secure_var, &dbsize);
+-	if (!db) {
+-		pr_err("MODSIGN: Couldn't get UEFI db list\n");
+-	} else {
+-		rc = parse_efi_signature_list(db, dbsize, system_trusted_keyring);
+-		if (rc)
+-			pr_err("Couldn't parse db signatures: %d\n", rc);
+-		kfree(db);
++	if (!ignore_db) {
++		db = get_cert_list(L"db", &secure_var, &dbsize);
++		if (!db) {
++			pr_err("MODSIGN: Couldn't get UEFI db list\n");
++		} else {
++			rc = parse_efi_signature_list(db, dbsize, system_trusted_keyring);
++			if (rc)
++				pr_err("Couldn't parse db signatures: %d\n", rc);
++			kfree(db);
++		}
+ 	}
+ 
+ 	mok = get_cert_list(L"MokListRT", &mok_var, &moksize);
+-- 
+1.9.3
+