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 <zo...@linux.vnet.ibm.com> Acked-by: Petko Manolov <pet...@mip-labs.com> Acked-by: Dmitry Kasatkin <dmitry.kasat...@huawei.com> --- security/integrity/ima/ima_policy.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 77a9fee..864f73d 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. */ -- 2.1.0 _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec