CVE-2022-39189
Public on 2022-09-02
Modified on 2022-10-25
Description
A flaw was found in the x86 KVM subsystem in kvm_steal_time_set_preempted in arch/x86/kvm/x86.c in the Linux kernel. Unprivileged guest users can compromise the guest kernel because TLB flush operations are mishandled in certain KVM_VCPU_PREEMPTED situations.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Kernel-5.15 Extra | kernel | 2022-09-30 | ALAS2KERNEL-5.15-2022-008 | Fixed |
| Amazon Linux 2 - Kernel-5.4 Extra | kernel | 2023-06-21 | ALAS2KERNEL-5.4-2023-047 | Fixed |
| Amazon Linux 2023 | kernel | 2023-02-17 | ALAS2023-2023-070 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv3 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |