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Temp fix for blacklist rework until I figure out how I want to fix for upstream

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This commit is contained in:
Justin M. Forbes 2017-05-04 16:04:12 -05:00
parent 05e55297ee
commit b88f18484e
2 changed files with 39 additions and 6 deletions
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43
MODSIGN-Import-certificates-from-UEFI-Secure-Boot.patch
View File

@ -51,17 +51,36 @@ index 787eeead2f57..4d9123ed5c07 100644
*
* Restrict the addition of keys into a keyring based on the key-to-be-added
diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h
index 5bc291a3d261..56ff5715ab67 100644
index 359c2f9..e7160a6 100644
--- a/include/keys/system_keyring.h
+++ b/include/keys/system_keyring.h
@@ -36,6 +36,7 @@ extern int restrict_link_by_builtin_and_secondary_trusted(
@@ -39,14 +39,26 @@ extern int restrict_link_by_builtin_and_secondary_trusted(
extern int mark_hash_blacklisted(const char *hash);
extern int is_hash_blacklisted(const u8 *hash, size_t hash_len,
const char *type);
+extern struct key *blacklist_keyring;
+
+static inline struct key *get_blacklist_keyring(void)
+{
+ return blacklist_keyring;
+}
#else
static inline int is_hash_blacklisted(const u8 *hash, size_t hash_len,
const char *type)
{
return 0;
}
+static inline struct key *get_blacklist_keyring(void)
+{
+ return NULL;
+}
#endif
+extern struct key *get_system_keyring(void);
+
#ifdef CONFIG_IMA_BLACKLIST_KEYRING
extern struct key *ima_blacklist_keyring;
diff --git a/init/Kconfig b/init/Kconfig
index 461ad575a608..93646fd7b1c8 100644
--- a/init/Kconfig
@ -108,7 +127,7 @@ new file mode 100644
index 000000000000..fe4a6f2bf10a
--- /dev/null
+++ b/kernel/modsign_uefi.c
@@ -0,0 +1,99 @@
@@ -0,0 +1,101 @@
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/cred.h>
@ -160,6 +179,7 @@ index 000000000000..fe4a6f2bf10a
+ unsigned long dbsize = 0, dbxsize = 0, moksize = 0;
+ int rc = 0;
+ struct key *keyring = NULL;
+ struct key *blacklist = NULL;
+
+ /* Check if SB is enabled and just return if not */
+ if (!efi_enabled(EFI_SECURE_BOOT))
@ -194,12 +214,13 @@ index 000000000000..fe4a6f2bf10a
+ kfree(mok);
+ }
+
+ blacklist = get_blacklist_keyring();
+ dbx = get_cert_list(L"dbx", &secure_var, &dbxsize);
+ if (!dbx) {
+ pr_info("MODSIGN: Couldn't get UEFI dbx list\n");
+ } else {
+ rc = parse_efi_signature_list(dbx, dbxsize,
+ system_blacklist_keyring);
+ blacklist);
+ if (rc)
+ pr_err("Couldn't parse dbx signatures: %d\n", rc);
+ kfree(dbx);
@ -210,4 +231,16 @@ index 000000000000..fe4a6f2bf10a
+late_initcall(load_uefi_certs);
--
2.9.3
diff --git a/certs/blacklist.c b/certs/blacklist.c
index 3eddce0..bd9324c 100644
--- a/certs/blacklist.c
+++ b/certs/blacklist.c
@@ -21,7 +21,7 @@
#include <keys/system_keyring.h>
#include "blacklist.h"
-static struct key *blacklist_keyring;
+struct key *blacklist_keyring;
/*
* The description must be a type prefix, a colon and then an even number of

2
MODSIGN-Support-not-importing-certs-from-db.patch
View File

@ -48,8 +48,8 @@ index fe4a6f2bf10a..a41da14b1ffd 100644
- int rc = 0;
+ int ignore_db, rc = 0;
struct key *keyring = NULL;
struct key *blacklist = NULL;
/* Check if SB is enabled and just return if not */
@@ -60,17 +77,22 @@ static int __init load_uefi_certs(void)
return -EINVAL;
}