According to Canonical it is: http://www.ubuntu.com/usn/usn-2485-1/ | Hacker News

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href on Jan 27, 2015 | parent | context | favorite | on: CVE-2015-0235 – GHOST: glibc gethostbyname buffer ...

According to Canonical it is: http://www.ubuntu.com/usn/usn-2485-1/

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