Issued:
2013-02-20
Updated:
2013-02-20

RHBA-2013:0346 - usbredir bug fix and enhancement update

Synopsis

usbredir bug fix and enhancement update

Type/Severity

Bug Fix Advisory

Topic

Updated usbredir packages that fix several bugs and add various enhancements are now available for Red Hat Enterprise Linux 6.

Description

The usbredir packages provide a protocol for redirection of USB traffic from a single USB device to a different virtual machine then the one to which the USB device is attached. The usbredir packages contain a number of libraries to help implement support for usbredir.

The usbredir packages have been upgraded to upstream version 0.5.1, which provides a number of bug fixes and enhancements over the previous version. (BZ#842356)

This update also fixes the following bugs:

  • Due to a bug in the libusbredirhost library, handling of timeouts for bulk transfers did not work correctly. Consequently, traffic of USB ACM serial port devices, such as PSTN modems and SmartCard readers, could not be properly redirected. With this update, no timeout is set on the usb-host side for these devices and the traffic redirection works as expected. (BZ#834560)

  • The usbredir code was allocating an unlimited amount of write buffers. Consequently, when a USB webcam produced data faster then it could be written out, the write queue grew boundlessly and the remote-viewer utility used an enormous amount of RAM. The underlying source code has been modified so that usbredir now checks how large the write queue is and drops isochronous data packets when the queue is too long. (BZ#855737)

In addition, this update adds the following enhancement:

  • Support for live migration of SPICE USB redirection requires support for state serialization. This update adds this missing support to the libusbredirparser library. (BZ#842316)

All users of usbredir are advised to upgrade to these updated packages, which fix these bugs and add these enhancements.

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 for Scientific Computing6x86_64
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • usbredir-devel-0.5.1-1.el6.x86_64.rpm
  • usbredir-debuginfo-0.5.1-1.el6.x86_64.rpm
  • usbredir-server-0.5.1-1.el6.x86_64.rpm
  • usbredir-0.5.1-1.el6.x86_64.rpm
  • usbredir-0.5.1-1.el6.src.rpm
  • usbredir-devel-0.5.1-1.el6.i686.rpm
  • usbredir-debuginfo-0.5.1-1.el6.i686.rpm
  • usbredir-0.5.1-1.el6.i686.rpm
  • usbredir-server-0.5.1-1.el6.i686.rpm

Fixes

CVEs

(none)

References

(none)

Additional information