Description
In the Linux kernel, the following vulnerability has been resolved:

x86/kvm: Teardown PV features on boot CPU as well

Various PV features (Async PF, PV EOI, steal time) work through memory
shared with hypervisor and when we restore from hibernation we must
properly teardown all these features to make sure hypervisor doesn't
write to stale locations after we jump to the previously hibernated kernel
(which can try to place anything there). For secondary CPUs the job is
already done by kvm_cpu_down_prepare(), register syscore ops to do
the same for boot CPU.
Published: 2024-03-15
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 13 Mar 2025 20:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Weaknesses NVD-CWE-noinfo
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel

Mon, 04 Nov 2024 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-11T13:48:18.136Z

Reserved: 2024-03-04T18:12:48.836Z

Link: CVE-2021-47112

cve-icon Vulnrichment

Updated: 2024-08-04T05:24:39.829Z

cve-icon NVD

Status : Analyzed

Published: 2024-03-15T21:15:06.627

Modified: 2025-03-13T19:36:08.147

Link: CVE-2021-47112

cve-icon Redhat

Severity : Low

Publid Date: 2024-03-15T00:00:00Z

Links: CVE-2021-47112 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses