CVE-2022-0171
kernel: KVM: cache incoherence issue in SEV API may lead to kernel crash
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 21, 2022
Updated · October 15, 2026
Description
A flaw was found in the Linux kernel. The existing KVM SEV API has a vulnerability that allows a non-root (host) user-level application to crash the host kernel by creating a confidential guest VM instance in AMD CPU that supports Secure Encrypted Virtualization (SEV).
Statement
This flaw does not affect the versions of the kernel packages as shipped with Red Hat Enterprise Linux 6 and 7, as they did not include support for SEV. Red Hat Enterprise Linux 8 currently provides SEV as a Technology Preview. Using SEV in a production environment is discouraged. For additional details please see https://access.redhat.com/articles/4491591 and https://access.redhat.com/support/offerings/techpreview.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-212 · Improper Removal of Sensitive Information Before Storage or Transfer