GLSA-202409-10 : Xen: Multiple Vulnerabilities

The remote host is affected by the vulnerability described in GLSA-202409-10 Xen: Multiple Vulnerabilities Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Tenable has extracted the preceding description block directly from the...

CVE-2022-42336

Mishandling of guest SSBD selection on AMD hardware The current logic to set SSBD on AMD Family 17h and Hygon Family 18h processors requires that the setting of SSBD is coordinated at a core level, as the setting is shared between threads. Logic was introduced to keep track of how many threads...

CVE-2022-42336

Mishandling of guest SSBD selection on AMD hardware The current logic to set SSBD on AMD Family 17h and Hygon Family 18h processors requires that the setting of SSBD is coordinated at a core level, as the setting is shared between threads. Logic was introduced to keep track of how many threads...

CVE-2022-42336

The CVE-2022-42336 issue affects Xen on AMD Family 17h and Hygon Family 18h CPUs, where SSBD activation is coordinated across threads via a per-core counter. The vulnerability arises when guest writes to VIRT_SPEC_CTRL.SSBD are propagated to the helper that tracks per-core SSBD activity, causing ...