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- ------------------------------------------------------------------------- Debian Security Advisory DSA-4934-1 security@debian.org https://www.debian.org/security/ Moritz Muehlenhoff
June 26, 2021 https://www.debian.org/security/faq
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Package : intel-microcode
CVE ID : CVE-2020-24489 CVE-2020-24511 CVE-2020-24512 CVE-2020-24513

This update ships updated CPU microcode for some types of Intel CPUs and provides mitigations for security vulnerabilities which could result in privilege escalation in combination with VT-d and various side channel
attacks.

For the stable distribution (buster), these problems have been fixed in
version 3.20210608.2~deb10u1.

Note that there are two reported regressions; for some CoffeeLake CPUs
this update may break iwlwifi (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/56) and some for Skylake R0/D0 CPUs on systems using a very outdated firmware/BIOS, the system may hang on boot: (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31)

If you are affected by those issues, you can recover by disabling microcode loading on boot (as documented in README.Debian (also available online at https://salsa.debian.org/hmh/intel-microcode/-/blob/master/debian/README.Debian))

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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