From f9abfd412639286c3143e93e8ba2c9598dfba640 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Micha=C5=82=20Januszewski?= <spock@gentoo.org>
Date: Fri, 25 Feb 2011 22:24:46 +0100
Subject: [PATCH] Verify that netlink messages are coming from kernel.

Thanks to Nelson Elhage for reporting this problem.
---
 v86.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/v86.c b/v86.c
index 5e4e69b..e065d84 100644
--- a/v86.c
+++ b/v86.c
@@ -129,6 +129,11 @@ int main(int argc, char *argv[])
 
 		reply = (struct nlmsghdr *)buf;
 
+		/* Ignore requests coming from outside the kernel. */
+		if (reply->nlmsg_pid != 0) {
+			continue;
+		}
+
 		switch (reply->nlmsg_type) {
 		case NLMSG_ERROR:
 			ulog(LOG_ERR, "Error message received.\n");
-- 
2.11.4.GIT