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authorMike Pecovnik <mike.pecovnik@gmail.com>2014-02-25 00:11:16 +0400
committerDavid S. Miller <davem@davemloft.net>2014-02-26 03:35:14 +0400
commit46833a86f7ab30101096d81117dd250bfae74c6f (patch)
tree916be8a6ddfe6d2c6cdccb93d6c752927c16854b /net/netlink
parent687d705c031916b83953b714917b04d899e23cf5 (diff)
downloadlinux-46833a86f7ab30101096d81117dd250bfae74c6f.tar.xz
net: Fix permission check in netlink_connect()
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>
Diffstat (limited to 'net/netlink')
-rw-r--r--net/netlink/af_netlink.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index fdf51353cf78..04748ab649c2 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -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)