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| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2015-12-07 21:08:01 +0100 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2016-02-21 15:34:23 +0100 |
| commit | 95ee08fa373b9ede1059c2f384cfeafe10dcd6bb (patch) | |
| tree | 6a0a93475e6a3a26328a800747e9188a04c8eef5 /security/integrity | |
| parent | ima: measure and appraise the IMA policy itself (diff) | |
| download | linux-95ee08fa373b9ede1059c2f384cfeafe10dcd6bb.tar.xz linux-95ee08fa373b9ede1059c2f384cfeafe10dcd6bb.zip | |
ima: require signed IMA policy
Require the IMA policy to be signed when additional rules can be added.
v1:
- initialize the policy flag
- include IMA_APPRAISE_POLICY in the policy flag
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Petko Manolov <petkan@mip-labs.com>
Acked-by: Dmitry Kasatkin <dmitry.kasatkin@huawei.com>
Diffstat (limited to 'security/integrity')
| -rw-r--r-- | security/integrity/ima/ima_policy.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index c1b5d00fe5d4..be09e2cacf82 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -129,6 +129,10 @@ static struct ima_rule_entry default_appraise_rules[] = { {.action = DONT_APPRAISE, .fsmagic = SELINUX_MAGIC, .flags = IMA_FSMAGIC}, {.action = DONT_APPRAISE, .fsmagic = NSFS_MAGIC, .flags = IMA_FSMAGIC}, {.action = DONT_APPRAISE, .fsmagic = CGROUP_SUPER_MAGIC, .flags = IMA_FSMAGIC}, +#ifdef CONFIG_IMA_WRITE_POLICY + {.action = APPRAISE, .func = POLICY_CHECK, + .flags = IMA_FUNC | IMA_DIGSIG_REQUIRED}, +#endif #ifndef CONFIG_IMA_APPRAISE_SIGNED_INIT {.action = APPRAISE, .fowner = GLOBAL_ROOT_UID, .flags = IMA_FOWNER}, #else @@ -412,9 +416,12 @@ void __init ima_init_policy(void) for (i = 0; i < appraise_entries; i++) { list_add_tail(&default_appraise_rules[i].list, &ima_default_rules); + if (default_appraise_rules[i].func == POLICY_CHECK) + temp_ima_appraise |= IMA_APPRAISE_POLICY; } ima_rules = &ima_default_rules; + ima_update_policy_flag(); } /* Make sure we have a valid policy, at least containing some rules. */ |