CVE Database


Impact: Important
Public: 2013-03-20
Bugzilla: 917017: CVE-2013-1798 kernel: kvm: out-of-bounds access in ioapic indirect register reads


The MITRE CVE dictionary describes this issue as:

The ioapic_read_indirect function in virt/kvm/ioapic.c in the Linux kernel through 3.8.4 does not properly handle a certain combination of invalid IOAPIC_REG_SELECT and IOAPIC_REG_WINDOW operations, which allows guest OS users to obtain sensitive information from host OS memory or cause a denial of service (host OS OOPS) via a crafted application.

Find out more about CVE-2013-1798 from the MITRE CVE dictionary and NIST NVD.


This issue did not affect the versions of Linux kernel as shipped with Red Hat
Enterprise Linux 5 and Red Hat Enterprise MRG as they did not provide support
for the KVM subsystem.

CVSS v2 metrics

Base Score: 5.9
Base Metrics: AV:A/AC:H/Au:S/C:C/I:N/A:C
Access Vector: Adjacent Network
Access Complexity: High
Authentication: Single Instance
Confidentiality Impact: Complete
Integrity Impact: None
Availability Impact: Complete

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
RHEV Hypervisor for RHEL-6 (rhev-hypervisor6) RHSA-2013:0746 April 23, 2013
Red Hat Enterprise Linux Server EUS (v. 6.2) (kernel) RHSA-2013:1026 July 09, 2013
Red Hat Enterprise Linux Server EUS (v. 6.3) (kernel) RHSA-2013:0928 June 11, 2013
Red Hat Enterprise Linux Virtualization version 5 (kvm) RHSA-2013:0727 April 09, 2013
Red Hat Enterprise Linux version 6 (kernel) RHSA-2013:0744 April 23, 2013

External References


Red Hat would like to thank Andrew Honig of Google for reporting this issue.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.