utsns: Add a limit on the number of uts namespaces

Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2016-08-08 14:11:25 -05:00
parent f333c700c6
commit f7af3d1c03
4 changed files with 32 additions and 5 deletions
--- a/kernel/ucount.c
+++ b/kernel/ucount.c
@@ -69,6 +69,7 @@ static int int_max = INT_MAX;
 static struct ctl_table user_table[] = {
 	UCOUNT_ENTRY("max_user_namespaces"),
 	UCOUNT_ENTRY("max_pid_namespaces"),
+	UCOUNT_ENTRY("max_uts_namespaces"),
 	{ }
 };
 #endif /* CONFIG_SYSCTL */