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| author | Mike Pecovnik <mike.pecovnik@gmail.com> | 2014-02-24 21:11:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-02-25 18:35:14 -0500 |
| commit | 46833a86f7ab30101096d81117dd250bfae74c6f (patch) | |
| tree | 916be8a6ddfe6d2c6cdccb93d6c752927c16854b /net/netlink | |
| parent | 687d705c031916b83953b714917b04d899e23cf5 (diff) | |
| download | linux-stable-46833a86f7ab30101096d81117dd250bfae74c6f.tar.gz linux-stable-46833a86f7ab30101096d81117dd250bfae74c6f.tar.bz2 linux-stable-46833a86f7ab30101096d81117dd250bfae74c6f.zip | |
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.c | 4 |
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) |