diff options
Diffstat (limited to 'net/sysctl_net.c')
| -rw-r--r-- | net/sysctl_net.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/sysctl_net.c b/net/sysctl_net.c index e3a6e37cd1c5..9bc6db04be3e 100644 --- a/net/sysctl_net.c +++ b/net/sysctl_net.c @@ -38,15 +38,24 @@ static int is_seen(struct ctl_table_set *set) } /* Return standard mode bits for table entry. */ -static int net_ctl_permissions(struct ctl_table_root *root, - struct nsproxy *nsproxy, +static int net_ctl_permissions(struct ctl_table_header *head, struct ctl_table *table) { + struct net *net = container_of(head->set, struct net, sysctls); + kuid_t root_uid = make_kuid(net->user_ns, 0); + kgid_t root_gid = make_kgid(net->user_ns, 0); + /* Allow network administrator to have same access as root. */ - if (capable(CAP_NET_ADMIN)) { + if (ns_capable(net->user_ns, CAP_NET_ADMIN) || + uid_eq(root_uid, current_uid())) { int mode = (table->mode >> 6) & 7; return (mode << 6) | (mode << 3) | mode; } + /* Allow netns root group to have the same access as the root group */ + if (gid_eq(root_gid, current_gid())) { + int mode = (table->mode >> 3) & 7; + return (mode << 3) | mode; + } return table->mode; } |