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CVE-2017-12188

HIGH
7.8
CVSS Score
Published: October 11, 2017 at 03:00 PM UTC
Updated: June 17, 2026 at 01:02 AM UTC
2 products affected across 2 vendorsLinux KernelKernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%

Description

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."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel· Linux
95%
4.10 ≤ v < 4.13.84.6 ≤ v < 4.9.57
Affected range stops below 4.13.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.57, so it looks safe — our inference, not a vendor statement
Kernel· Red Hat
60%
All versions

References (6)

VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/101267
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:0395
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:0412
x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1500380
x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
Source: [email protected]
https://patchwork.kernel.org/patch/9996579/
x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
Source: [email protected]
https://patchwork.kernel.org/patch/9996587/

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-121CWE-22

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