Debian: DSA-5462-1 Critical Update: AMD Zen 2 Information Leak
debian
July 30, 2023
Tavis Ormandy discovered that under specific microarchitectural circumstances, a vector register in AMD "Zen 2" CPUs may not be written to 0 correctly
Topics Covered
Summary
For details please refer to
This issue can also be mitigated by a microcode update through the
amd64-microcode package or a system firmware (BIOS/UEFI) update.
However, the initial microcode release by AMD only provides
updates for second generation EPYC CPUs. Various Ryzen CPUs are
also affected, but no updates are available yet.
For the stable distribution (bookworm), this problem has been fixed in
version 6.1.38-2.
We recommend that you upgrade your linux packages.
For the detailed security status of linux please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/source-package/linux
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/
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Package: linux
CVE ID: CVE-2023-20593
Topics Covered
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