View at Official ubuntu advisory, NVD, CVE.org · CVE detail
Freshness: upstream tracker timestamp is available; use API updated time as primary recency signal.
CVE-2016-2337 negligible priority: Ubuntu including 4 source packages (ruby1.8, ruby1.9.1, ruby2.0, ruby2.3), 24 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): DNE 13, needs-triage 4, not-affected 3, ignored 2, released 2.
Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution.