1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index 63d4eccc674d..d84400b65049 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -883,6 +883,9 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
                 table[6].data =
                         &net->ipv4.sysctl_ping_group_range;
 
+                /* Don't export sysctls to unprivileged users */
+                if (net->user_ns != &init_user_ns)
+                        table[0].procname = NULL;
         }
 
         /*