diff options
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 22571488730a..f1c0c2e9cad5 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -2987,6 +2987,10 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p, t->neigh_vars[NEIGH_VAR_BASE_REACHABLE_TIME_MS].extra1 = dev; } + /* Don't export sysctls to unprivileged users */ + if (neigh_parms_net(p)->user_ns != &init_user_ns) + t->neigh_vars[0].procname = NULL; + snprintf(neigh_path, sizeof(neigh_path), "net/%s/neigh/%s", p_name, dev_name_source); t->sysctl_header = |