audit: allow user processes to log from another PID namespace
Still only permit the audit logging daemon and control to operate from the
initial PID namespace, but allow processes to log from another PID namespace.
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
(informed by ebiederman's c776b5d2)
Signed-off-by: Richard Guy Briggs <rgb@redhat.com>
diff --git a/kernel/audit.c b/kernel/audit.c
index 5a096f8..72c6e1c 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -607,9 +607,8 @@
{
int err = 0;
- /* Only support the initial namespaces for now. */
- if ((current_user_ns() != &init_user_ns) ||
- (task_active_pid_ns(current) != &init_pid_ns))
+ /* Only support initial user namespace for now. */
+ if ((current_user_ns() != &init_user_ns))
return -EPERM;
switch (msg_type) {
@@ -629,6 +628,11 @@
case AUDIT_TTY_SET:
case AUDIT_TRIM:
case AUDIT_MAKE_EQUIV:
+ /* Only support auditd and auditctl in initial pid namespace
+ * for now. */
+ if ((task_active_pid_ns(current) != &init_pid_ns))
+ return -EPERM;
+
if (!capable(CAP_AUDIT_CONTROL))
err = -EPERM;
break;