Issued:
2012-07-31
Updated:
2012-07-31

RHSA-2012:1130 - Moderate: xen security update

Synopsis

Moderate: xen security update

Type/Severity

Security Advisory Moderate

Topic

Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Description

The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux.

A flaw was found in the way the pyGrub boot loader handled compressed kernel images. A privileged guest user in a para-virtualized guest (a DomU) could use this flaw to create a crafted kernel image that, when attempting to boot it, could result in an out-of-memory condition in the privileged domain (the Dom0). (CVE-2012-2625)

Red Hat would like to thank Xinli Niu for reporting this issue.

All users of xen are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, the xend service must be restarted for this update to take effect.

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • xen-libs-3.0.3-135.el5_8.4.i386.rpm
  • xen-libs-3.0.3-135.el5_8.4.x86_64.rpm
  • xen-debuginfo-3.0.3-135.el5_8.4.ia64.rpm
  • xen-3.0.3-135.el5_8.4.src.rpm
  • xen-devel-3.0.3-135.el5_8.4.i386.rpm
  • xen-devel-3.0.3-135.el5_8.4.ia64.rpm
  • xen-3.0.3-135.el5_8.4.x86_64.rpm
  • xen-3.0.3-135.el5_8.4.i386.rpm
  • xen-libs-3.0.3-135.el5_8.4.ia64.rpm
  • xen-3.0.3-135.el5_8.4.ia64.rpm
  • xen-devel-3.0.3-135.el5_8.4.x86_64.rpm
  • xen-debuginfo-3.0.3-135.el5_8.4.x86_64.rpm
  • xen-debuginfo-3.0.3-135.el5_8.4.i386.rpm

Fixes

CVEs

References

Additional information