-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-4934-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff June 26, 2021 https://www.debian.org/security/faq - ------------------------------------------------------------------------- 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and some for Skylake R0/D0 CPUs on systems using a very outdated firmware/BIOS, the system may hang on boot: (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31) If you are affected by those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: [email protected]