Debian 11: DSA-5178-1 Moderate: Intel Microcode Info Leak

debian

July 6, 2022

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

Topics Covered

security advisory information leak debian moderate threat intel-microcode CPU update

Summary

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://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 i...