diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 478181d..88be3ab 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -1990,18 +1990,35 @@ static int netlink_seq_show(struct seq_file *seq, void *v) struct sock *s = v; struct netlink_sock *nlk = nlk_sk(s); - seq_printf(seq, "%p %-3d %-6d %08x %-8d %-8d %p %-8d %-8d %-8lu\n", - s, - s->sk_protocol, - nlk->pid, - nlk->groups ? (u32)nlk->groups[0] : 0, - sk_rmem_alloc_get(s), - sk_wmem_alloc_get(s), - nlk->cb, - atomic_read(&s->sk_refcnt), - atomic_read(&s->sk_drops), - sock_i_ino(s) - ); + /* Only expose kernel addresses to privileged readers */ + if (capable(CAP_NET_ADMIN)) + seq_printf(seq, "%p %-3d %-6d %08x %-8d " + "%-8d %p %-8d %-8d %-8lu\n", + s, + s->sk_protocol, + nlk->pid, + nlk->groups ? (u32)nlk->groups[0] : 0, + sk_rmem_alloc_get(s), + sk_wmem_alloc_get(s), + nlk->cb, + atomic_read(&s->sk_refcnt), + atomic_read(&s->sk_drops), + sock_i_ino(s) + ); + else + seq_printf(seq, "%d %-3d %-6d %08x %-8d " + "%-8d %d %-8d %-8d %-8lu\n", + 0, + s->sk_protocol, + nlk->pid, + nlk->groups ? (u32)nlk->groups[0] : 0, + sk_rmem_alloc_get(s), + sk_wmem_alloc_get(s), + 0, + atomic_read(&s->sk_refcnt), + atomic_read(&s->sk_drops), + sock_i_ino(s) + ); } return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-sctp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
