lxclock.c in LXC 1.1.2 and earlier allows local users to create arbitrary files via a symlink attack on /run/lock/lxc/*.
https://service.ait.ac.at/security/2015/LxcSecurityAnalysis.html
https://github.com/lxc/lxc/commit/72cf81f6a3404e35028567db2c99a90406e9c6e6
http://www.ubuntu.com/usn/USN-2675-1
http://www.securityfocus.com/bid/75999
http://www.debian.org/security/2015/dsa-3317
http://lists.opensuse.org/opensuse-updates/2015-07/msg00066.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00073.html