Author: hiren
Date: Thu Jan 5 17:22:09 2017
New Revision: 311453
URL: https://svnweb.freebsd.org/changeset/base/311453
Log:
sysctl net.inet.tcp.hostcache.list in a jail can see connections from other
jails and the host. This commit fixes it.
PR: 200361
Submitted by: bz (original version), hiren (minor corrections)
Reported by: Marcus Reid <marcus at blazingdot dot com>
Reviewed by: bz, gnn
Tested by: Lohith Bellad <lohithbsd at gmail dot com>
MFC after: 1 week
Sponsored by: Limelight Networks (minor corrections)
Modified:
head/sys/netinet/tcp_hostcache.c
Modified: head/sys/netinet/tcp_hostcache.c
==============================================================================
--- head/sys/netinet/tcp_hostcache.c Thu Jan 5 17:19:26 2017
(r311452)
+++ head/sys/netinet/tcp_hostcache.c Thu Jan 5 17:22:09 2017
(r311453)
@@ -69,10 +69,12 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/malloc.h>
+#include <sys/proc.h>
#include <sys/sbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
@@ -625,6 +627,9 @@ sysctl_tcp_hc_list(SYSCTL_HANDLER_ARGS)
char ip6buf[INET6_ADDRSTRLEN];
#endif
+ if (jailed_without_vnet(curthread->td_ucred) != 0)
+ return (EPERM);
+
sbuf_new(&sb, NULL, linesize * (V_tcp_hostcache.cache_count + 1),
SBUF_INCLUDENUL);
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