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TI-2011-03988 Aliases CVE-2011-4622GHSA-gqh3-j9ff-5g88

The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other…

Priority LOW 22Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · Complete
Fix status
Partial Red Hat: 10 fixed, 1 without a fix

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.

Summary

The create_pit_timer function in arch/x86/kvm/i8254.c in KVM 83, and possibly other versions, does not properly handle when Programmable Interval Timer (PIT) interrupt requests (IRQs) when a virtual interrupt controller (irqchip) is not available, which allows local users to cause a denial of service (NULL pointer dereference) by starting a timer.

Why it matters now

EPSS 0.00347 28th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 10 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:redhat:kvm:83:*:*:*:*:*:*:*83VulnerableRed Hat
  • cpe:2.3:a:redhat:kvm:83:*:*:*:*:*:*:* Versions 83 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2012:0350 Released 2012-03-06 · Red Hat rating Moderate
    kernel security and bug fix update
    • Red Hat Enterprise Linux Desktop (v. 6) kernel-2.6.32-220.7.1.el6, kernel-debug-2.6.32-220.7.1.el6, kernel-debug-devel-2.6.32-220.7.1.el6 +5
    • Red Hat Enterprise Linux Desktop Optional (v. 6) kernel-2.6.32-220.7.1.el6, python-perf-2.6.32-220.7.1.el6
    • Red Hat Enterprise Linux HPC Node (v. 6) kernel-2.6.32-220.7.1.el6, kernel-debug-2.6.32-220.7.1.el6, kernel-debug-devel-2.6.32-220.7.1.el6 +5
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) kernel-2.6.32-220.7.1.el6, python-perf-2.6.32-220.7.1.el6
    • Red Hat Enterprise Linux Server (v. 6) kernel-2.6.32-220.7.1.el6, kernel-bootwrapper-2.6.32-220.7.1.el6, kernel-debug-2.6.32-220.7.1.el6 +8
    • Red Hat Enterprise Linux Server Optional (v. 6) kernel-2.6.32-220.7.1.el6, python-perf-2.6.32-220.7.1.el6
    • Red Hat Enterprise Linux Workstation (v. 6) kernel-2.6.32-220.7.1.el6, kernel-debug-2.6.32-220.7.1.el6, kernel-debug-devel-2.6.32-220.7.1.el6 +5
    • Red Hat Enterprise Linux Workstation Optional (v. 6) kernel-2.6.32-220.7.1.el6, python-perf-2.6.32-220.7.1.el6
  • RHSA-2012:0051 Released 2012-01-23 · Red Hat rating Important
    kvm security update
    • RHEL Desktop Multi OS (v. 5 client) kmod-kvm-83-239.el5_7.1, kmod-kvm-debug-83-239.el5_7.1, kvm-83-239.el5_7.1 +2
    • RHEL Virtualization (v. 5 server) kmod-kvm-83-239.el5_7.1, kmod-kvm-debug-83-239.el5_7.1, kvm-83-239.el5_7.1 +2

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix yet
RHEL Desktop Multi OS (v. 5 client)Fixed RHSA-2012:0051
RHEL Virtualization (v. 5 server)Fixed RHSA-2012:0051
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2012:0350
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2012:0350
Not affected: 2 products
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2011-4622
  2. 2026-10-03 Alias added: GHSA-gqh3-j9ff-5g88

References

Patch 1

Advisory 3

Other 2

  • TI-2010-02661 The subpage MMIO initialization functionality in the subpage_register function in exec.c… CVSS 2.0MEDIUM 6.6
  • TI-2010-00409 QEMU-KVM, as used in the Hypervisor (aka rhev-hypervisor) in Red Hat Enterprise… CVSS 2.0MEDIUM 6.6
  • TI-2010-00413 The Hypervisor (aka rhev-hypervisor) in Red Hat Enterprise Virtualization (RHEV) 2.2, and… CVSS 2.0MEDIUM 4.6

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences