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authorJames Morris <james.l.morris@oracle.com>2016-11-23 09:52:11 +1100
committerJames Morris <james.l.morris@oracle.com>2016-11-23 09:52:11 +1100
commitb075361e91684f8b9d4a85ad2e6f62f94d6698e3 (patch)
tree6f0c9717988ff9f9ad4878d00ae27c123091391e /security
parent636e4625adb5a53ee7f6b019fa2e68f36cf96d93 (diff)
parentb4bfec7f4a86424b114f94f41c4e1841ec102df3 (diff)
downloadlinux-stericsson-b075361e91684f8b9d4a85ad2e6f62f94d6698e3.tar.gz
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity into next
Diffstat (limited to 'security')
-rw-r--r--security/integrity/digsig.c2
-rw-r--r--security/integrity/evm/evm_main.c4
-rw-r--r--security/integrity/ima/ima_appraise.c13
-rw-r--r--security/integrity/ima/ima_fs.c2
-rw-r--r--security/integrity/ima/ima_init.c3
5 files changed, 14 insertions, 10 deletions
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c
index 4304372b323f..106e855e2d9d 100644
--- a/security/integrity/digsig.c
+++ b/security/integrity/digsig.c
@@ -51,7 +51,7 @@ static bool init_keyring __initdata;
int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
const char *digest, int digestlen)
{
- if (id >= INTEGRITY_KEYRING_MAX)
+ if (id >= INTEGRITY_KEYRING_MAX || siglen < 2)
return -EINVAL;
if (!keyring[id]) {
diff --git a/security/integrity/evm/evm_main.c b/security/integrity/evm/evm_main.c
index ba8615576d4d..e2ed498c0f5f 100644
--- a/security/integrity/evm/evm_main.c
+++ b/security/integrity/evm/evm_main.c
@@ -145,6 +145,10 @@ static enum integrity_status evm_verify_hmac(struct dentry *dentry,
/* check value type */
switch (xattr_data->type) {
case EVM_XATTR_HMAC:
+ if (xattr_len != sizeof(struct evm_ima_xattr_data)) {
+ evm_status = INTEGRITY_FAIL;
+ goto out;
+ }
rc = evm_calc_hmac(dentry, xattr_name, xattr_value,
xattr_value_len, calc.digest);
if (rc)
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c
index 389325ac6067..1fd9539a969d 100644
--- a/security/integrity/ima/ima_appraise.c
+++ b/security/integrity/ima/ima_appraise.c
@@ -130,6 +130,7 @@ enum hash_algo ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value,
int xattr_len)
{
struct signature_v2_hdr *sig;
+ enum hash_algo ret;
if (!xattr_value || xattr_len < 2)
/* return default hash algo */
@@ -143,7 +144,9 @@ enum hash_algo ima_get_hash_algo(struct evm_ima_xattr_data *xattr_value,
return sig->hash_algo;
break;
case IMA_XATTR_DIGEST_NG:
- return xattr_value->digest[0];
+ ret = xattr_value->digest[0];
+ if (ret < HASH_ALGO__LAST)
+ return ret;
break;
case IMA_XATTR_DIGEST:
/* this is for backward compatibility */
@@ -384,14 +387,10 @@ int ima_inode_setxattr(struct dentry *dentry, const char *xattr_name,
result = ima_protect_xattr(dentry, xattr_name, xattr_value,
xattr_value_len);
if (result == 1) {
- bool digsig;
-
if (!xattr_value_len || (xvalue->type >= IMA_XATTR_LAST))
return -EINVAL;
- digsig = (xvalue->type == EVM_IMA_XATTR_DIGSIG);
- if (!digsig && (ima_appraise & IMA_APPRAISE_ENFORCE))
- return -EPERM;
- ima_reset_appraise_flags(d_backing_inode(dentry), digsig);
+ ima_reset_appraise_flags(d_backing_inode(dentry),
+ (xvalue->type == EVM_IMA_XATTR_DIGSIG) ? 1 : 0);
result = 0;
}
return result;
diff --git a/security/integrity/ima/ima_fs.c b/security/integrity/ima/ima_fs.c
index c07a3844ea0a..3df46906492d 100644
--- a/security/integrity/ima/ima_fs.c
+++ b/security/integrity/ima/ima_fs.c
@@ -401,7 +401,7 @@ static int ima_release_policy(struct inode *inode, struct file *file)
const char *cause = valid_policy ? "completed" : "failed";
if ((file->f_flags & O_ACCMODE) == O_RDONLY)
- return 0;
+ return seq_release(inode, file);
if (valid_policy && ima_check_policy() < 0) {
cause = "failed";
diff --git a/security/integrity/ima/ima_init.c b/security/integrity/ima/ima_init.c
index 32912bd54ead..2ac1f41db5c0 100644
--- a/security/integrity/ima/ima_init.c
+++ b/security/integrity/ima/ima_init.c
@@ -115,7 +115,8 @@ int __init ima_init(void)
ima_used_chip = 1;
if (!ima_used_chip)
- pr_info("No TPM chip found, activating TPM-bypass!\n");
+ pr_info("No TPM chip found, activating TPM-bypass! (rc=%d)\n",
+ rc);
rc = integrity_init_keyring(INTEGRITY_KEYRING_IMA);
if (rc)