An issue was discovered the x86 KVM subsystem in the Linux kernel before 5.18.17. Unprivileged guest users can compromise the guest kernel because TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED situations.
https://bugs.chromium.org/p/project-zero/issues/detail?id=2309
https://github.com/torvalds/linux/commit/6cd88243c7e03845a450795e134b488fc2afb736
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.18.17
Source: MITRE
Published: 2022-09-02
Updated: 2023-02-14
Type: NVD-CWE-noinfo
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH