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net: Fix permission check in netlink_connect()

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netlink_sendmsg() was changed to prevent non-root processes from sending
messages with dst_pid != 0.
netlink_connect() however still only checks if nladdr->nl_groups is set.
This patch modifies netlink_connect() to check for the same condition.

Signed-off-by: Mike Pecovnik <mike.pecovnik@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mike Pecovnik 2014-02-24 21:11:16 +01:00 committed by David S. Miller
parent 687d705c03
commit 46833a86f7
1 changed files with 2 additions and 2 deletions
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4
net/netlink/af_netlink.c
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@ -1489,8 +1489,8 @@ static int netlink_connect(struct socket *sock, struct sockaddr *addr,
if (addr->sa_family != AF_NETLINK)
return -EINVAL;
/* Only superuser is allowed to send multicasts */
if (nladdr->nl_groups && !netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
if ((nladdr->nl_groups || nladdr->nl_pid) &&
!netlink_capable(sock, NL_CFG_F_NONROOT_SEND))
return -EPERM;
if (!nlk->portid)