CVE-2011-4622

Published Jan 27, 2012

Last updated 7 years ago

Overview

Description: 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.
Source: secalert@redhat.com
NVD status: Modified

Hype score: Not currently trending

Risk scores

CVSS 2.0

Type: Primary
Base score: 4.9
Impact score: 6.9
Exploitability score: 3.9
Vector string: AV:L/AC:L/Au:N/C:N/I:N/A:C

Weaknesses

nvd@nist.gov: NVD-CWE-noinfo

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:redhat:kvm:83:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "C9998FC2-8189-4269-BEF5-2044933ACB30"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]

References