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-2016-10121 low priority: Ubuntu including 1 source packages (firejail), 5 status rows across 5 suites (precise, trusty, upstream, xenial, yakkety): DNE 2, not-affected 2, released 1.
Firejail uses weak permissions for /dev/shm/firejail and possibly other files, which allows local users to gain privileges.