RHBA-2014:1575 - Bug Fix Advisory

Topic

Updated grubby packages that fix two bugs are now available for Red Hat
Enterprise Linux 6.

Description

grubby is a command line tool for updating and displaying information about the
configuration files for the grub, lilo, elilo (ia64), yaboot (powerpc) and zipl
(s390) boot loaders. It is primarily designed to be used from scripts which
install new kernels and need to find information about the current boot
environment.

This update fixes the following bugs:

• Prior to this update, the Trusted Boot (tboot) module incorrectly used the

tboot.gz multiboot image to search for a grub configuration file. As a
consequence, running the "yum update" command led to grubby corrupting the
grub.conf file when tboot was enabled and two or more kernels were updated. With
this update, tboot uses specific kernel names to search for grub configuration,
and corruption of grub.conf no longer occurs in the described scenario.
(BZ#1098846)

• Previously, enabling tboot caused the kernel configuration to not be displayed

properly when running the "grubby --info=DEFAULT" command. With this update,
multiboot module parameters have been included in the output of "grubby --info",
and the configuration displays as expected when tboot is running. (BZ#997934)

Users of grubby are advised to upgrade to these updated packages, which fix
these bugs.

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/site/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• 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 from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 1098846 - grubby will corrupt the grub.conf at yum update when tboot is used

CVEs

(none)

References

(none)