CVE-2013-6456: Avoid unsafe use of /proc/$PID/root in LXC disk hotplug
authorDaniel P. Berrange <berrange@redhat.com>
Thu, 30 Jan 2014 15:59:20 +0000 (15:59 +0000)
committerDaniel P. Berrange <berrange@redhat.com>
Tue, 18 Feb 2014 15:53:09 +0000 (15:53 +0000)
commited46a680a02cf96b229a89f74ddbab69522c9ef5
tree48dd53273ba4ccbd4a32247b1de4a2268144d8cd
parent807db4a30ee903f973d496b3293d9e6aaa511174
CVE-2013-6456: Avoid unsafe use of /proc/$PID/root in LXC disk hotplug

Rewrite lxcDomainAttachDeviceDiskLive function to use the
virProcessRunInMountNamespace helper. This avoids risk of
a malicious guest replacing /dev with a absolute symlink,
tricking the driver into changing the host OS filesystem.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 4dd3a7d5bc44980135a1b11810ba9aeab42a4a59)

Conflicts:
src/lxc/lxc_driver.c: OOM + cgroups error reporting and
        remove usernamespace integration
src/lxc/lxc_driver.c