From c84b3268da3b85c9d8a9e504e1001a14ed829e94 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 5 Nov 2009 20:45:52 -0800 Subject: [PATCH] net: check kern before calling security subsystem Before calling capable(CAP_NET_RAW) check if this operations is on behalf of the kernel or on behalf of userspace. Do not do the security check if it is on behalf of the kernel. Signed-off-by: Eric Paris Acked-by: Arnaldo Carvalho de Melo Signed-off-by: David S. Miller --- net/bluetooth/l2cap.c | 2 +- net/ipv4/af_inet.c | 2 +- net/ipv6/af_inet6.c | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 365ae161d702..ff0233df6246 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -832,7 +832,7 @@ static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; - if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW)) + if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) return -EPERM; sock->ops = &l2cap_sock_ops; diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 5c7e42c02afb..7d12c6a9b19b 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -326,7 +326,7 @@ lookup_protocol: } err = -EPERM; - if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW)) + if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) goto out_rcu_unlock; err = -EAFNOSUPPORT; diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c index 45ed5e05ab32..12e69d364dd5 100644 --- a/net/ipv6/af_inet6.c +++ b/net/ipv6/af_inet6.c @@ -159,7 +159,7 @@ lookup_protocol: } err = -EPERM; - if (sock->type == SOCK_RAW && !capable(CAP_NET_RAW)) + if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) goto out_rcu_unlock; sock->ops = answer->ops; -- 2.20.1