diff options
| author | Andrew Lutomirski <luto@amacapital.net> | 2014-04-16 21:41:34 -0700 |
|---|---|---|
| committer | Show Liu <show.liu@linaro.org> | 2014-06-18 12:03:53 +0800 |
| commit | bf0a8064b509b27271e9ec2cd7cbe212b3e0d0da (patch) | |
| tree | 019f7034310e747ed4519eb7255a8ca6ad705f52 /net | |
| parent | 76f0ccd0b92780f53339d7052e7af0c990c5147c (diff) | |
net: Fix ns_capable check in sock_diag_put_filterinfo
[ Upstream commit 78541c1dc60b65ecfce5a6a096fc260219d6784e ]
The caller needs capabilities on the namespace being queried, not on
their own namespace. This is a security bug, although it likely has
only a minor impact.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Acked-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/core/sock_diag.c | 4 | ||||
| -rw-r--r-- | net/packet/diag.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c index a0e9cf6379d..6a7fae22863 100644 --- a/net/core/sock_diag.c +++ b/net/core/sock_diag.c @@ -49,7 +49,7 @@ int sock_diag_put_meminfo(struct sock *sk, struct sk_buff *skb, int attrtype) } EXPORT_SYMBOL_GPL(sock_diag_put_meminfo); -int sock_diag_put_filterinfo(struct user_namespace *user_ns, struct sock *sk, +int sock_diag_put_filterinfo(struct sock *sk, struct sk_buff *skb, int attrtype) { struct nlattr *attr; @@ -57,7 +57,7 @@ int sock_diag_put_filterinfo(struct user_namespace *user_ns, struct sock *sk, unsigned int len; int err = 0; - if (!ns_capable(user_ns, CAP_NET_ADMIN)) { + if (!ns_capable(sock_net(sk)->user_ns, CAP_NET_ADMIN)) { nla_reserve(skb, attrtype, 0); return 0; } diff --git a/net/packet/diag.c b/net/packet/diag.c index 533ce4ff108..435ff99ba8c 100644 --- a/net/packet/diag.c +++ b/net/packet/diag.c @@ -172,7 +172,7 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, goto out_nlmsg_trim; if ((req->pdiag_show & PACKET_SHOW_FILTER) && - sock_diag_put_filterinfo(user_ns, sk, skb, PACKET_DIAG_FILTER)) + sock_diag_put_filterinfo(sk, skb, PACKET_DIAG_FILTER)) goto out_nlmsg_trim; return nlmsg_end(skb, nlh); |