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CVE-2014-8134· NVD / CVE Program· CNA redhat

The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM

The paravirt_ops_setup function in arch/x86/kernel/kvm.c in the Linux kernel through 3.18 uses an improper paravirt_enabled setting for KVM guest kernels, which makes it easier for guest OS users to bypass the ASLR protection mechanism via a crafted application that reads a 16-bit value.

LowCVSS 3.3 · v3.1—No exploit Fix available
Published
Dec 12, 2014
Updated
Jun 16, 2026
EPSS
0.7% · 51th percentile
CWE
—
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Report tools

JSON

Action score

13

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

Affected systems

VendorProduct
linuxlinux kernel
canonicalubuntu linux
opensuseevergreen
opensuseopensuse
susesuse linux enterprise server
oraclelinux

Affected versions

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

  • canonical ubuntu linux12.04
  • canonical ubuntu linux14.04
  • canonical ubuntu linux16.04
  • linux linux kernelup to 3.18 inclusive
  • opensuse evergreen11.4
  • opensuse opensuse13.1
  • oracle linux6
  • suse suse linux enterprise server11

Package-level exposure

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

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 3.16.7-ckt4-13.16.7-ckt4-1
Debian:6.0linux-2.6before 2.6.32-48squeeze112.6.32-48squeeze11
Red Hat:enterprise_linux:6::clientkernelbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-abi-whitelistsbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debugbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debug-debuginfobefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debug-develbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfobefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-i686before 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-debuginfo-common-x86_64before 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-develbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-docbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-firmwarebefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientkernel-headersbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientperfbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientperf-debuginfobefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientpython-perfbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::clientpython-perf-debuginfobefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-bootwrapperbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-ppc64before 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-debuginfo-common-s390xbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-kdumpbefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-debuginfobefore 0:2.6.32-642.el60:2.6.32-642.el6
Red Hat:enterprise_linux:6::serverkernel-kdump-develbefore 0:2.6.32-642.el60:2.6.32-642.el6

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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:linux3.16.7-ckt4-1 · Debian:12Package registry (OSV)
debian:linux-2.62.6.32-48squeeze11 · Debian:6.0Package registry (OSV)
red hat:kernel0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-abi-whitelists0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug-debuginfo0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debug-devel0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-i6860:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-debuginfo-common-x86_640:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:kernel-devel0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:perf-debuginfo0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:python-perf0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:python-perf-debuginfo0:2.6.32-642.el6 · Red Hat:enterprise_linux:6::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.

No commit or PR link among the references.

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.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

—

CVSS vector

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

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.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

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