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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2021-47112 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://git.kernel.org/stable/c/38b858da1c58ad46519a257764e059e663b59ff2 Patch 
https://git.kernel.org/stable/c/38b858da1c58ad46519a257764e059e663b59ff2 Patch 
https://git.kernel.org/stable/c/7620a669111b52f224d006dea9e1e688e2d62c54 Patch 
https://git.kernel.org/stable/c/7620a669111b52f224d006dea9e1e688e2d62c54 Patch 
https://git.kernel.org/stable/c/8b79feffeca28c5459458fe78676b081e87c93a4 Patch 
https://git.kernel.org/stable/c/8b79feffeca28c5459458fe78676b081e87c93a4 Patch 
https://git.kernel.org/stable/c/d1629b5b925de9b27979e929dae7fcb766daf6b6 Patch 
https://git.kernel.org/stable/c/d1629b5b925de9b27979e929dae7fcb766daf6b6 Patch 

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-noinfo Insufficient Information cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
5.4.125
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
5.5		Up to (excluding)
5.10.43
 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		From (including)
5.11		Up to (excluding)
5.12.10
 cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-47112
NVD Published Date:
03/15/2024
NVD Last Modified:
03/13/2025
Source:
kernel.org