Forwarding to the list...
-------- Original Message --------
Subject: libcgroup netlink
Date: Fri, 12 Nov 2010 15:13:27 -0500
From: Steve Grubb <[email protected]>
To: [email protected]
Hello,
One last issue that I was wondering about. The daemon listens to netlink
for some kind
of events. Where do these events come from and how do you know its the
kernel that
sent it? Most netlink code does something like:
if (nladdrlen != sizeof(nladdr)) {
syslog(LOG_ERR,
"Bad address size reading netlink socket");
return;
}
if (nladdr.nl_pid) {
syslog(LOG_ERR,
"Spoofed packet received on netlink socket");
return;
}
That is...unless the kernel has protection for mischievous users trying
to spoof
messages on this netlink protocol family.
-Steve
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