RHBA-2012:0771 - Bug Fix Advisory

Topic

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

Description

The tboot packages provide Trusted Boot (tboot), an open source pre- kernel/VMM
module, that uses Intel Trusted Execution Technology (Intel TXT) to initialize
the launch of operating system kernels and virtual machines.

The tboot package has been upgraded to upstream version 1.7.0, which provides a
number of bug fixes and enhancements over the previous version and adds support
for future Intel chip sets. (BZ#773406)

This update also fixes the following bugs:

• Prior to this update, increasing binary large objects (BLOB) with lcptools or

lcputils utilities could cause a null pointer dereferencing. This update
modifies the underlying code so that the pointer now refers to an existing
value. (BZ#732439)

• Prior to this update, the tboot module could, under certain circumstances, be

enabled on 32-bit platforms. As a consequence, tboot could prevent the kernel
from booting. This update restricts tboot to 64-bit platforms. (BZ#754345)

All users of tboot are advised to upgrade to these updated packages, which fix
these bugs and adds 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

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64

Fixes

CVEs

(none)

References

(none)