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Unscored USN-4628-3 3 CVEs

intel-microcode vulnerabilities

Published May 17, 2021 · Updated Feb 10, 2026

Summary

USN-4628-1 provided updated Intel Processor Microcode for various processor
types. This update provides the corresponding updates for some additional
processor types.

Original advisory details:

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. (CVE-2020-8695)

Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that
some Intel(R) Processors did not properly remove sensitive information
before storage or transfer in some situations. A local attacker could
possibly use this to expose sensitive information. (CVE-2020-8696)

Ezra Caltum, Joseph Nuzman, Nir Shildan and Ofir Joseff discovered that
some Intel(R) Processors did not properly isolate shared resources in some
situations. A local attacker could possibly use this to expose sensitive
information. (CVE-2020-8698)

Fixed packages 2

ReleasePackageFixed in
Ubuntu · 18.04 LTS 18.04:LTS intel-microcode 3.20210216.0ubuntu0.18.04.1
Ubuntu · 20.04 LTS 20.04:LTS intel-microcode 3.20210216.0ubuntu0.20.04.1

Vulnerabilities 3

References

  • report
    https://ubuntu.com/security/CVE-2020-8695
  • report
    https://ubuntu.com/security/CVE-2020-8696
  • report
    https://ubuntu.com/security/CVE-2020-8698