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-2018-3620 high priority: Ubuntu including 78 source packages (linux, linux-aws, …), 630 status rows across 10 suites (bionic, cosmic, disco, focal, jammy, noble, oracular, trusty, upstream, xenial): DNE 398, not-affected 132, released 89, ignored 11.
Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.