发布于3月6日3月6日 Members Gentoo Linux: CVE-2022-42334: Xen: Multiple Vulnerabilities Severity 5 CVSS (AV:L/AC:L/Au:S/C:N/I:N/A:C) Published 03/21/2023 Created 02/06/2024 Added 02/05/2024 Modified 01/28/2025 Description x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334). Solution(s) gentoo-linux-upgrade-app-emulation-xen References https://attackerkb.com/topics/cve-2022-42334 CVE - 2022-42334 202402-07
