diff options
Diffstat (limited to 'net/netfilter/x_tables.c')
| -rw-r--r-- | net/netfilter/x_tables.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index d4aaad747ea9..c8a0b7da5ff4 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -26,6 +26,7 @@ #include <linux/mm.h> #include <linux/slab.h> #include <linux/audit.h> +#include <linux/user_namespace.h> #include <net/net_namespace.h> #include <linux/netfilter/x_tables.h> @@ -1226,6 +1227,8 @@ int xt_proto_init(struct net *net, u_int8_t af) #ifdef CONFIG_PROC_FS char buf[XT_FUNCTION_MAXNAMELEN]; struct proc_dir_entry *proc; + kuid_t root_uid; + kgid_t root_gid; #endif if (af >= ARRAY_SIZE(xt_prefix)) @@ -1233,12 +1236,17 @@ int xt_proto_init(struct net *net, u_int8_t af) #ifdef CONFIG_PROC_FS + root_uid = make_kuid(net->user_ns, 0); + root_gid = make_kgid(net->user_ns, 0); + strlcpy(buf, xt_prefix[af], sizeof(buf)); strlcat(buf, FORMAT_TABLES, sizeof(buf)); proc = proc_create_data(buf, 0440, net->proc_net, &xt_table_ops, (void *)(unsigned long)af); if (!proc) goto out; + if (uid_valid(root_uid) && gid_valid(root_gid)) + proc_set_user(proc, root_uid, root_gid); strlcpy(buf, xt_prefix[af], sizeof(buf)); strlcat(buf, FORMAT_MATCHES, sizeof(buf)); @@ -1246,6 +1254,8 @@ int xt_proto_init(struct net *net, u_int8_t af) (void *)(unsigned long)af); if (!proc) goto out_remove_tables; + if (uid_valid(root_uid) && gid_valid(root_gid)) + proc_set_user(proc, root_uid, root_gid); strlcpy(buf, xt_prefix[af], sizeof(buf)); strlcat(buf, FORMAT_TARGETS, sizeof(buf)); @@ -1253,6 +1263,8 @@ int xt_proto_init(struct net *net, u_int8_t af) (void *)(unsigned long)af); if (!proc) goto out_remove_matches; + if (uid_valid(root_uid) && gid_valid(root_gid)) + proc_set_user(proc, root_uid, root_gid); #endif return 0; |