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-2017-12136 medium priority: Ubuntu including 1 source packages (xen), 4 status rows across 4 suites (trusty, upstream, xenial, zesty): released 2, DNE 1, needs-triage 1.
Race condition in the grant table code in Xen 4.6.x through 4.9.x allows local guest OS administrators to cause a denial of service (free list corruption and host crash) or gain privileges on the host via vectors involving maptrack free list handling.