| From | Stefan Berger <> | Subject | [PATCH v9 02/23] ima: Do not print policy rule with inactive LSM labels | Date | Tue, 25 Jan 2022 17:46:24 -0500 |
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From: Stefan Berger <stefanb@linux.ibm.com>
Before printing a policy rule scan for inactive LSM labels in the policy rule. Inactive LSM labels are identified by args_p != NULL and rule == NULL.
Fixes: b16942455193 ("ima: use the lsm policy update notifier") Signed-off-by: Stefan Berger <stefanb@linux.ibm.com> --- security/integrity/ima/ima_policy.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 320ca80aacab..2a1f6418b10a 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -1967,6 +1967,14 @@ int ima_policy_show(struct seq_file *m, void *v) rcu_read_lock(); + /* Do not print rules with inactive LSM labels */ + for (i = 0; i < MAX_LSM_RULES; i++) { + if (entry->lsm[i].args_p && !entry->lsm[i].rule) { + rcu_read_unlock(); + return 0; + } + } + if (entry->action & MEASURE) seq_puts(m, pt(Opt_measure)); if (entry->action & DONT_MEASURE) -- 2.31.1
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