RHBA-2012:1083 - Bug Fix Advisory

Topic

An updated virtio-win package that fixes two bugs is now available for Red Hat
Enterprise Linux 6.

Description

The virtio-win package provides paravirtualized network drivers for most
Microsoft Windows operating systems. Paravirtualized drivers are
virtualization-aware drivers used by fully virtualized guests running on Red Hat
Enterprise Linux. Fully virtualized guests using the paravirtualized drivers
gain significantly better I/O performance than fully virtualized guests running
without the drivers.

This update fixes the following bugs:

• A bug in the virtio serial driver could cause a Stop Error (also known as Blue

Screen of Death, or BSoD) which occurred on a guest machine when transferring
data from the host. This update fixes the bug in the driver so that the guest
machine no longer crashes with Blue Screen of Death in this scenario.
(BZ#838523)

• The QXL driver included in the previous version of the virtio-win package was

not digitally signed. The QXL driver provided in this update in digitally
signed. (BZ#838655)

All users of virtio-win are advised to upgrade to this updated package, which
fixes these bugs.

Solution

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

This update is available via 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

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.3 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.3 x86_64

Fixes

• BZ - 838523 - [virtio-win][serial]Windows 7 Guest BSOD - DRIVER_IRQL_NOT_LESS_OR_EQUAL
• BZ - 838655 - qxl driver in virtio-win-1.5.2 is not digital signed

CVEs

(none)

References

(none)