DescriptionAn issue was discovered in Linux Containers (LXC) before 2016-02-22. When executing a program via lxc-attach, the nonpriv session can escape to the parent session by using the TIOCSTI ioctl to push characters into the terminal's input buffer, allowing an attacker to escape the container.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
lxc (PTS)jessie1:1.0.6-6+deb8u6vulnerable
jessie (security)1:1.0.6-6+deb8u2vulnerable
bullseye, sid1:3.1.0+really3.0.4-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[jessie] - lxc <no-dsa> (Minor issue)
[wheezy] - lxc <no-dsa> (Minor issue) (lxc-2.0.0.rc2)

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