Public Date:
949981: CVE-2013-1935 kernel: kvm: pv_eoi guest updates with interrupts disabled

The MITRE CVE dictionary describes this issue as:

A certain Red Hat patch to the KVM subsystem in the kernel package before 2.6.32-358.11.1.el6 on Red Hat Enterprise Linux (RHEL) 6 does not properly implement the PV EOI feature, which allows guest OS users to cause a denial of service (host OS crash) by leveraging a time window during which interrupts are disabled but copy_to_user function calls are possible.

Find out more about CVE-2013-1935 from the MITRE CVE dictionary dictionary and NIST NVD.


This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2. This issue does not affect the versions of KVM package as shipped with Red Hat Enterprise Linux 5.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 5.7
Base Metrics AV:A/AC:M/Au:N/C:N/I:N/A:C
Access Vector Adjacent Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
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-2013:0907 2013-06-10
Red Hat Enterprise Linux version 6 (kernel) RHSA-2013:0911 2013-06-10

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 kvm Not affected
Red Hat Enterprise Linux 5 kernel Not affected


Red Hat would like to thank IBM for reporting this issue.