Prevent un-init user namespace from generating lots of skb.
Signed-off-by: Gao feng <[email protected]>
---
kernel/audit.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/audit.c b/kernel/audit.c
index 79a8b8e..297ac6e 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -303,6 +303,9 @@ static int audit_set_rate_limit(int limit)
static int audit_set_backlog_limit(int limit)
{
+ if (current_user_ns() != &init_user_ns)
+ return -EPERM;
+
return audit_do_config_change("audit_backlog_limit",
&audit_backlog_limit, limit);
}
--
1.8.1.4
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