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authorAndrei Vagin <avagin@openvz.org>2017-10-25 10:16:42 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-11-18 11:11:06 +0100
commit93b12f202a4eae6856e2f67e002c8e4363600d4a (patch)
tree5c592c3db81dc565a6d3fffa948c7a239c35307a /net/unix
parent84237c54b2399076c7a22b7818b0a414099d02d0 (diff)
net/unix: don't show information about sockets from other namespaces
[ Upstream commit 0f5da659d8f1810f44de14acf2c80cd6499623a0 ] socket_diag shows information only about sockets from a namespace where a diag socket lives. But if we request information about one unix socket, the kernel don't check that its netns is matched with a diag socket namespace, so any user can get information about any unix socket in a system. This looks like a bug. v2: add a Fixes tag Fixes: 51d7cccf0723 ("net: make sock diag per-namespace") Signed-off-by: Andrei Vagin <avagin@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/unix')
-rw-r--r--net/unix/diag.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/unix/diag.c b/net/unix/diag.c
index 4d9679701a6d..384c84e83462 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -257,6 +257,8 @@ static int unix_diag_get_exact(struct sk_buff *in_skb,
err = -ENOENT;
if (sk == NULL)
goto out_nosk;
+ if (!net_eq(sock_net(sk), net))
+ goto out;
err = sock_diag_check_cookie(sk, req->udiag_cookie);
if (err)