An intel-microcode security update has been released for Debian GNU/Linux 9 LTS to address three security issues.

DLA 2546-1: intel-microcode security update

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Debian LTS Advisory DLA-2546-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Utkarsh Gupta
February 06, 2021   https://wiki.debian.org/LTS
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Package : intel-microcode
Version : 3.20201118.1~deb9u1
CVE ID : CVE-2020-8695 CVE-2020-8696 CVE-2020-8698

CVE-2020-8695

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

CVE-2020-8696

Improper removal of sensitive information before storage
or transfer in some Intel(R) Processors may allow an
authenticated user to potentially enable information
disclosure via local access.

CVE-2020-8698

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

For Debian 9 stretch, these problems have been fixed in version
3.20201118.1~deb9u1.

We recommend that you upgrade your intel-microcode packages.

For the detailed security status of intel-microcode please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/intel-microcode

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS