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Debian Security Advisory DSA-5178-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
July 06, 2022                         https://www.debian.org/security/faq
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Package        : intel-microcode
CVE ID         : CVE-2022-21123 CVE-2022-21125 CVE-2022-21127 CVE-2022-21151
                 CVE-2022-21166
Debian Bug     : 1010947

This update ships updated CPU microcode for some types of Intel CPUs and
provides mitigations for security vulnerabilities.

CVE-2022-21123, CVE-2022-21125, CVE-2022-21127, CVE-2022-21166

    Various researchers discovered flaws in Intel processors,
    collectively referred to as MMIO Stale Data vulnerabilities, which
    may result in information leak to local users.

    For details please refer to
    https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/processor-mmio-stale-data-vulnerabilities.html

CVE-2022-21151

    Alysa Milburn, Jason Brandt, Avishai Redelman and Nir Lavi
    discovered that for some Intel processors optimization removal or
    modification of security-critical code may result in information
    disclosure to local users.

For the oldstable distribution (buster), these problems have been fixed
in version 3.20220510.1~deb10u1.

For the stable distribution (bullseye), these problems have been fixed in
version 3.20220510.1~deb11u1.

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 Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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