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-rw-r--r--arch/x86/kernel/kexec-bzimage64.c14
-rw-r--r--certs/system_keyring.c23
-rw-r--r--fs/namei.c1
-rw-r--r--include/keys/system_keyring.h8
-rw-r--r--include/linux/ima.h5
-rw-r--r--include/linux/verification.h1
-rw-r--r--security/integrity/digsig.c3
-rw-r--r--security/integrity/evm/evm_crypto.c3
-rw-r--r--security/integrity/evm/evm_main.c6
-rw-r--r--security/integrity/ima/ima_main.c35
-rw-r--r--security/keys/encrypted-keys/encrypted.c4
11 files changed, 88 insertions, 15 deletions
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index 1f3b77367948..22f60dd26460 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -538,9 +538,17 @@ static int bzImage64_cleanup(void *loader_data)
#ifdef CONFIG_KEXEC_BZIMAGE_VERIFY_SIG
static int bzImage64_verify_sig(const char *kernel, unsigned long kernel_len)
{
- return verify_pefile_signature(kernel, kernel_len,
- VERIFY_USE_SECONDARY_KEYRING,
- VERIFYING_KEXEC_PE_SIGNATURE);
+ int ret;
+
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_SECONDARY_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ if (ret == -ENOKEY && IS_ENABLED(CONFIG_INTEGRITY_PLATFORM_KEYRING)) {
+ ret = verify_pefile_signature(kernel, kernel_len,
+ VERIFY_USE_PLATFORM_KEYRING,
+ VERIFYING_KEXEC_PE_SIGNATURE);
+ }
+ return ret;
}
#endif
diff --git a/certs/system_keyring.c b/certs/system_keyring.c
index 81728717523d..c05c29ae4d5d 100644
--- a/certs/system_keyring.c
+++ b/certs/system_keyring.c
@@ -24,6 +24,9 @@ static struct key *builtin_trusted_keys;
#ifdef CONFIG_SECONDARY_TRUSTED_KEYRING
static struct key *secondary_trusted_keys;
#endif
+#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
+static struct key *platform_trusted_keys;
+#endif
extern __initconst const u8 system_certificate_list[];
extern __initconst const unsigned long system_certificate_list_size;
@@ -237,11 +240,22 @@ int verify_pkcs7_signature(const void *data, size_t len,
#else
trusted_keys = builtin_trusted_keys;
#endif
+ } else if (trusted_keys == VERIFY_USE_PLATFORM_KEYRING) {
+#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
+ trusted_keys = platform_trusted_keys;
+#else
+ trusted_keys = NULL;
+#endif
+ if (!trusted_keys) {
+ ret = -ENOKEY;
+ pr_devel("PKCS#7 platform keyring is not available\n");
+ goto error;
+ }
}
ret = pkcs7_validate_trust(pkcs7, trusted_keys);
if (ret < 0) {
if (ret == -ENOKEY)
- pr_err("PKCS#7 signature not signed with a trusted key\n");
+ pr_devel("PKCS#7 signature not signed with a trusted key\n");
goto error;
}
@@ -266,3 +280,10 @@ error:
EXPORT_SYMBOL_GPL(verify_pkcs7_signature);
#endif /* CONFIG_SYSTEM_DATA_VERIFICATION */
+
+#ifdef CONFIG_INTEGRITY_PLATFORM_KEYRING
+void __init set_platform_trusted_keys(struct key *keyring)
+{
+ platform_trusted_keys = keyring;
+}
+#endif
diff --git a/fs/namei.c b/fs/namei.c
index 0a8c5c27f90e..3662a09830be 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -3460,6 +3460,7 @@ struct dentry *vfs_tmpfile(struct dentry *dentry, umode_t mode, int open_flag)
inode->i_state |= I_LINKABLE;
spin_unlock(&inode->i_lock);
}
+ ima_post_create_tmpfile(inode);
return child;
out_err:
diff --git a/include/keys/system_keyring.h b/include/keys/system_keyring.h
index 359c2f936004..42a93eda331c 100644
--- a/include/keys/system_keyring.h
+++ b/include/keys/system_keyring.h
@@ -61,5 +61,13 @@ static inline struct key *get_ima_blacklist_keyring(void)
}
#endif /* CONFIG_IMA_BLACKLIST_KEYRING */
+#if defined(CONFIG_INTEGRITY_PLATFORM_KEYRING) && \
+ defined(CONFIG_SYSTEM_TRUSTED_KEYRING)
+extern void __init set_platform_trusted_keys(struct key *keyring);
+#else
+static inline void set_platform_trusted_keys(struct key *keyring)
+{
+}
+#endif
#endif /* _KEYS_SYSTEM_KEYRING_H */
diff --git a/include/linux/ima.h b/include/linux/ima.h
index b5e16b8c50b7..dc12fbcf484c 100644
--- a/include/linux/ima.h
+++ b/include/linux/ima.h
@@ -18,6 +18,7 @@ struct linux_binprm;
#ifdef CONFIG_IMA
extern int ima_bprm_check(struct linux_binprm *bprm);
extern int ima_file_check(struct file *file, int mask);
+extern void ima_post_create_tmpfile(struct inode *inode);
extern void ima_file_free(struct file *file);
extern int ima_file_mmap(struct file *file, unsigned long prot);
extern int ima_load_data(enum kernel_load_data_id id);
@@ -56,6 +57,10 @@ static inline int ima_file_check(struct file *file, int mask)
return 0;
}
+static inline void ima_post_create_tmpfile(struct inode *inode)
+{
+}
+
static inline void ima_file_free(struct file *file)
{
return;
diff --git a/include/linux/verification.h b/include/linux/verification.h
index cfa4730d607a..018fb5f13d44 100644
--- a/include/linux/verification.h
+++ b/include/linux/verification.h
@@ -17,6 +17,7 @@
* should be used.
*/
#define VERIFY_USE_SECONDARY_KEYRING ((struct key *)1UL)
+#define VERIFY_USE_PLATFORM_KEYRING ((struct key *)2UL)
/*
* The use to which an asymmetric key is being put.
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index f45d6edecf99..e19c2eb72c51 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -87,6 +87,9 @@ static int __integrity_init_keyring(const unsigned int id, key_perm_t perm,
pr_info("Can't allocate %s keyring (%d)\n",
keyring_name[id], err);
keyring[id] = NULL;
+ } else {
+ if (id == INTEGRITY_KEYRING_PLATFORM)
+ set_platform_trusted_keys(keyring[id]);
}
return err;
diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index 43e2dc3a60d0..c37d08118af5 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -173,8 +173,7 @@ static void hmac_add_misc(struct shash_desc *desc, struct inode *inode,
crypto_shash_update(desc, (const u8 *)&hmac_misc, sizeof(hmac_misc));
if ((evm_hmac_attrs & EVM_ATTR_FSUUID) &&
type != EVM_XATTR_PORTABLE_DIGSIG)
- crypto_shash_update(desc, &inode->i_sb->s_uuid.b[0],
- sizeof(inode->i_sb->s_uuid));
+ crypto_shash_update(desc, (u8 *)&inode->i_sb->s_uuid, UUID_SIZE);
crypto_shash_final(desc, digest);
}
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index 5ecaa3d6fe0b..b6d9f14bc234 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -563,7 +563,6 @@ static int __init init_evm(void)
{
int error;
struct list_head *pos, *q;
- struct xattr_list *xattr;
evm_init_config();
@@ -580,11 +579,8 @@ static int __init init_evm(void)
error:
if (error != 0) {
if (!list_empty(&evm_config_xattrnames)) {
- list_for_each_safe(pos, q, &evm_config_xattrnames) {
- xattr = list_entry(pos, struct xattr_list,
- list);
+ list_for_each_safe(pos, q, &evm_config_xattrnames)
list_del(pos);
- }
}
}
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 4ffac4f5c647..357edd140c09 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -397,6 +397,33 @@ int ima_file_check(struct file *file, int mask)
EXPORT_SYMBOL_GPL(ima_file_check);
/**
+ * ima_post_create_tmpfile - mark newly created tmpfile as new
+ * @file : newly created tmpfile
+ *
+ * No measuring, appraising or auditing of newly created tmpfiles is needed.
+ * Skip calling process_measurement(), but indicate which newly, created
+ * tmpfiles are in policy.
+ */
+void ima_post_create_tmpfile(struct inode *inode)
+{
+ struct integrity_iint_cache *iint;
+ int must_appraise;
+
+ must_appraise = ima_must_appraise(inode, MAY_ACCESS, FILE_CHECK);
+ if (!must_appraise)
+ return;
+
+ /* Nothing to do if we can't allocate memory */
+ iint = integrity_inode_get(inode);
+ if (!iint)
+ return;
+
+ /* needed for writing the security xattrs */
+ set_bit(IMA_UPDATE_XATTR, &iint->atomic_flags);
+ iint->ima_file_status = INTEGRITY_PASS;
+}
+
+/**
* ima_post_path_mknod - mark as a new inode
* @dentry: newly created dentry
*
@@ -413,9 +440,13 @@ void ima_post_path_mknod(struct dentry *dentry)
if (!must_appraise)
return;
+ /* Nothing to do if we can't allocate memory */
iint = integrity_inode_get(inode);
- if (iint)
- iint->flags |= IMA_NEW_FILE;
+ if (!iint)
+ return;
+
+ /* needed for re-opening empty files */
+ iint->flags |= IMA_NEW_FILE;
}
/**
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index 389a298274d3..347108f660a1 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -60,11 +60,11 @@ static int blksize;
static struct crypto_shash *hash_tfm;
enum {
- Opt_err = -1, Opt_new, Opt_load, Opt_update
+ Opt_new, Opt_load, Opt_update, Opt_err
};
enum {
- Opt_error = -1, Opt_default, Opt_ecryptfs, Opt_enc32
+ Opt_default, Opt_ecryptfs, Opt_enc32, Opt_error
};
static const match_table_t key_format_tokens = {
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