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CVE-2017-12188· NVD / CVE Program· CNA redhat

arch/x86/kvm/mmu.c in the Linux kernel through 4.13.5, when nested virtualisation is used, does not properly traverse guest pagetable entrie

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.44% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: linux (Debian:12) 4.13.4-2; kernel (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.21.1.el7; kernel-abi-whitelists (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.21.1.el7.

Low priority for now. Upgrade to linux (Debian:12) 4.13.4-2; kernel (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.21.1.el7; kernel-abi-whitelists (Red Hat:enterprise_linux:7::client) 0:3.10.0-693.21.1.el7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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."

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Oct 11, 2017
Updated
Jun 16, 2026
EPSS
0.4% · 36th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

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  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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  • when exploit code appears or is weaponized
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  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
linuxlinux kernel

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • linux linux kernel4.6 and later · before 4.9.57
  • linux linux kernel4.10 and later · before 4.13.8

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Linux kernel

    • Linux kernelaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 4.13.4-24.13.4-2
Red Hat:enterprise_linux:7::clientkernelbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-abi-whitelistsbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-debugbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-debug-debuginfobefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-debug-develbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-debuginfobefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-debuginfo-common-x86_64before 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-develbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-docbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-headersbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-toolsbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-debuginfobefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-libsbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientkernel-tools-libs-develbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientperfbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientperf-debuginfobefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientpython-perfbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::clientpython-perf-debuginfobefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::serverkernel-bootwrapperbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-ppc64before 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-ppc64lebefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::serverkernel-debuginfo-common-s390xbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7
Red Hat:enterprise_linux:7::serverkernel-kdumpbefore 0:3.10.0-693.21.1.el70:3.10.0-693.21.1.el7

+19

Same product

linux: all records

Other highest-scoring records for the same primary product.

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    89Now
  • CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV
    85Now
  • CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV
    83Now
  • CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV
    77This week
  • CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV
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Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:linux4.13.4-2 · Debian:12Package registry (OSV)
red hat:kernel0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-abi-whitelists0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debug-devel0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-x86_640:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-devel0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-doc0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-headers0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:kernel-tools-debuginfo0:3.10.0-693.21.1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Local
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-121 · Stack-based Buffer Overflow

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (5 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records