What is CVE-2021-47110?

CVE-2021-47110 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10. CVE-2021-47110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2021-47110?

CVE-2021-47110 has a CVSS score of 7.1 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.

Is there a patch available for CVE-2021-47110?

No patch is currently available for CVE-2021-47110. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2021-47110 actively exploited?

CVE-2021-47110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2021-47110

High

In the Linux kernel, the following vulnerability has been resolved: x86/kvm: Disable kvmclock on all CPUs on shutdown Currenly, we disable kvmclock from machine_shutdown() hook and this only happens for boot CPU. We need to disable it for all CPUs to guard against memory corruption e.g. on restore from hibernate. Note, writing '0' to kvmclock MSR doesn't clear memory location, it just prevents hypervisor from updating the location so for the short while after write and while CPU is still alive, the clock remains usable and correct so we don't need to switch to some other clocksource.

Package Linux Kernel

Published 2024-03-15

Last modified 2025-03-13

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.1

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness type

CWE-459

CVE-2021-47110 is classified as CWE-459

See CWE-459 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2021-47110 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1df2dc09926f61319116c80ee85701df33577d70
Patch
Kernel patch commit
https://git.kernel.org/stable/c/3b0becf8b1ecf642a9edaf4c9628ffc641e490d6
Patch
Kernel patch commit
https://git.kernel.org/stable/c/9084fe1b3572664ad276f427dce575f580c9799a
Patch

4 patch commits total View all on NVD

Details

CVE ID CVE-2021-47110

Severity High

CVSS score 7.1 / 10

CVSS version 3.1

Published 2024-03-15

Modified 2025-03-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2021-47110?

CVE-2021-47110 is a High severity Linux kernel vulnerability with a CVSS score of 7.1 out of 10 . CVE-2021-47110 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2021-47110?

CVE-2021-47110 has a CVSS score of 7.1 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
Is there a patch available for CVE-2021-47110?

No patch is currently available for CVE-2021-47110. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2021-47110 actively exploited?

No — CVE-2021-47110 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.