Published: 08 June 2021

Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

From the Ubuntu security team

Joseph Nuzman discovered that some Intel processors may not properly apply EIBRS mitigations (originally developed for CVE-2017-5715) and hence may allow unauthorized memory reads via sidechannel attacks. A local attacker could use this to expose sensitive information, including kernel memory.



CVSS 3 base score: 5.6


Package Release Status
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 21.10 (Impish Indri)
Released (3.20210608.0ubuntu1)
Ubuntu 21.04 (Hirsute Hippo)
Released (3.20210608.0ubuntu0.21.04.1)
Ubuntu 20.04 LTS (Focal Fossa)
Released (3.20210608.0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (3.20210608.0ubuntu0.18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (3.20210608.0ubuntu0.16.04.1+esm1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.20210608.0ubuntu0.14.04.1+esm1)