diff options
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/neighbour.c | 4 | ||||
| -rw-r--r-- | net/core/sysctl_net_core.c | 5 |
2 files changed, 9 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 = diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c index a7c36845b123..d1b08045a9df 100644 --- a/net/core/sysctl_net_core.c +++ b/net/core/sysctl_net_core.c @@ -216,6 +216,11 @@ static __net_init int sysctl_core_net_init(struct net *net) goto err_dup; tbl[0].data = &net->core.sysctl_somaxconn; + + /* Don't export any sysctls to unprivileged users */ + if (net->user_ns != &init_user_ns) { + tbl[0].procname = NULL; + } } net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl); |