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Published: 10 November 2020

Observable discrepancy in the RAPL interface for some Intel(R) Processors may allow a privileged user to potentially enable information disclosure via local access.

From the Ubuntu security team

Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running Average Power Limit (RAPL) feature of some Intel processors allowed a side-channel attack based on power consumption measurements. A local attacker could possibly use this to expose sensitive information.



CVSS 3 base score: 5.5


Package Release Status
Launchpad, Ubuntu, Debian
Upstream Needs triage

Ubuntu 20.04 LTS (Focal Fossa)
Released (3.20201110.0ubuntu0.20.04.1)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (3.20201110.0ubuntu0.18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (3.20201110.0ubuntu0.16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.20201110.0ubuntu0.14.04.1)