What is CVE-2017-12188?

CVE-2017-12188 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10. CVE-2017-12188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2017-12188?

CVE-2017-12188 has a CVSS score of 7.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2017-12188?

No patch is currently available for CVE-2017-12188. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2017-12188 actively exploited?

CVE-2017-12188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2017-12188

High

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entries to resolve a guest virtual address, which allows L1 guest OS users to execute arbitrary code on the host OS or cause a denial of service (incorrect index during page walking, and host OS crash), aka an "MMU potential stack buffer overrun."

Package Linux Kernel

Published 2017-10-11

Last modified 2026-05-13

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

7.8

out of 10

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-121

CVE-2017-12188 is classified as CWE-121

See CWE-121 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2017-12188 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Securityfocus
http://www.securityfocus.com/bid/101267

Third Party Advisory VDB Entry
Red Hat
https://access.redhat.com/errata/RHSA-2018:0395

Third Party Advisory
Red Hat
https://access.redhat.com/errata/RHSA-2018:0412

Third Party Advisory
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=1500380
Patch
Kernel patch commit
https://patchwork.kernel.org/patch/9996579/
Patch
Kernel patch commit
https://patchwork.kernel.org/patch/9996587/
Patch

Details

CVE ID CVE-2017-12188

Severity High

CVSS score 7.8 / 10

CVSS version 3.1

Published 2017-10-11

Modified 2026-05-13

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2017-12188?

CVE-2017-12188 is a High severity Linux kernel vulnerability with a CVSS score of 7.8 out of 10 . CVE-2017-12188 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2017-12188?

CVE-2017-12188 has a CVSS score of 7.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Is there a patch available for CVE-2017-12188?

No patch is currently available for CVE-2017-12188. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2017-12188 actively exploited?

No — CVE-2017-12188 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.