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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 01:02:38 +0000
commit08b74a000942a380fe028845f92cd3a0dee827d5 (patch)
treeaa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch
parentAdding upstream version 4.19.249. (diff)
downloadlinux-debian/4.19.249-2.tar.xz
linux-debian/4.19.249-2.zip
Adding debian version 4.19.249-2.debian/4.19.249-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch')
-rw-r--r--debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch91
1 files changed, 91 insertions, 0 deletions
diff --git a/debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch b/debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch
new file mode 100644
index 000000000..a67217c02
--- /dev/null
+++ b/debian/patches/features/all/db-mok-keyring/0001-KEYS-Allow-unrestricted-boot-time-addition-of-keys-t.patch
@@ -0,0 +1,91 @@
+From: David Howells <dhowells@redhat.com>
+Date: Fri, 5 May 2017 08:21:56 +0100
+Subject: [PATCH 1/7] KEYS: Allow unrestricted boot-time addition of keys to
+ secondary keyring
+Origin: https://git.kernel.org/pub/scm/linux/kernel/git/jforbes/linux.git/commit/?id=40db8fc497d010ae6cee6297c3882d3dc3d76d48
+
+Allow keys to be added to the system secondary certificates keyring during
+kernel initialisation in an unrestricted fashion. Such keys are implicitly
+trusted and don't have their trust chains checked on link.
+
+This allows keys in the UEFI database to be added in secure boot mode for
+the purposes of module signing.
+
+Signed-off-by: David Howells <dhowells@redhat.com>
+---
+ certs/internal.h | 18 ++++++++++++++++++
+ certs/system_keyring.c | 33 +++++++++++++++++++++++++++++++++
+ 2 files changed, 51 insertions(+)
+ create mode 100644 certs/internal.h
+
+Index: linux/certs/internal.h
+===================================================================
+--- /dev/null
++++ linux/certs/internal.h
+@@ -0,0 +1,18 @@
++/* Internal definitions
++ *
++ * Copyright (C) 2016 Red Hat, Inc. All Rights Reserved.
++ * Written by David Howells (dhowells@redhat.com)
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public Licence
++ * as published by the Free Software Foundation; either version
++ * 2 of the Licence, or (at your option) any later version.
++ */
++
++/*
++ * system_keyring.c
++ */
++#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
++extern void __init add_trusted_secondary_key(const char *source,
++ const void *data, size_t len);
++#endif
+Index: linux/certs/system_keyring.c
+===================================================================
+--- linux.orig/certs/system_keyring.c
++++ linux/certs/system_keyring.c
+@@ -19,6 +19,7 @@
+ #include <keys/asymmetric-type.h>
+ #include <keys/system_keyring.h>
+ #include <crypto/pkcs7.h>
++#include "internal.h"
+
+ static struct key *builtin_trusted_keys;
+ #ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
+@@ -266,3 +267,35 @@ error:
+ EXPORT_SYMBOL_GPL(verify_pkcs7_signature);
+
+ #endif /* CONFIG_SYSTEM_DATA_VERIFICATION */
++
++#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
++/**
++ * add_trusted_secondary_key - Add to secondary keyring with no validation
++ * @source: Source of key
++ * @data: The blob holding the key
++ * @len: The length of the data blob
++ *
++ * Add a key to the secondary keyring without checking its trust chain. This
++ * is available only during kernel initialisation.
++ */
++void __init add_trusted_secondary_key(const char *source,
++ const void *data, size_t len)
++{
++ key_ref_t key;
++
++ key = key_create_or_update(make_key_ref(secondary_trusted_keys, 1),
++ "asymmetric",
++ NULL, data, len,
++ (KEY_POS_ALL & ~KEY_POS_SETATTR) |
++ KEY_USR_VIEW,
++ KEY_ALLOC_NOT_IN_QUOTA |
++ KEY_ALLOC_BYPASS_RESTRICTION);
++
++ if (IS_ERR(key))
++ pr_err("Problem loading %s X.509 certificate (%ld)\n",
++ source, PTR_ERR(key));
++ else
++ pr_notice("Loaded %s cert '%s' linked to secondary sys keyring\n",
++ source, key_ref_to_ptr(key)->description);
++}
++#endif /* CONFIG_SECONDARY_TRUSTED_KEYRING */