# \[PATCH v5 09/16\] ima: Only accept AUDIT rules for IMA non-init\_ima\_ns namespaces for now

- From: Stefan Berger \<stefanb@linux.ibm.com\>
- Date: 2021-12-08 22:19:42 
- List: linux-security-module
- Page: https://ratatoskr.run/linux-security-module/2021/12/1601796
- Thread: https://ratatoskr.run/linux-integrity/2021/12/1601798/t.md

```text
Only accept AUDIT rules for non-init_ima_ns namespaces rejecting all rules
that require support for measuring, appraisal, and hashing.

Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
---
 security/integrity/ima/ima_policy.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c
index 4d6d3a39f65e..747dca6131d6 100644
--- a/security/integrity/ima/ima_policy.c
+++ b/security/integrity/ima/ima_policy.c
@@ -1787,6 +1787,16 @@ static int ima_parse_rule(struct ima_namespace *ns,
 			result = -EINVAL;
 			break;
 		}
+
+		/* IMA namespace only accepts AUDIT rules */
+		if (ns != &init_ima_ns) {
+			switch (entry->action) {
+			case MEASURE:
+			case APPRAISE:
+			case HASH:
+				result = -EINVAL;
+			}
+		}
 	}
 	if (!result && !ima_validate_rule(entry))
 		result = -EINVAL;
-- 
2.31.1

```