All current version of TurnKey Linux are potentially vulnerable to CVE-2016-5195, a kernel privilege escalation bug tagged "Dirty COW".
TurnKey versions 13.x and 14.x should have already auto installed the updated kernel, however users need to manually reboot their servers for the patched kernel to be applied.
Users of earlier versions of TurnKey (i.e. v11.x & v12.x) are strongly urged to upgrade their systems to a supported version of TurnKey ASAP.
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