Synopsis

grub bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated grub packages that fix several bugs are now available for Red Hat
Enterprise Linux 6.

Description

The grub packages provide GRUB (Grand Unified Boot Loader), a boot loader
capable of booting a wide variety of operating systems.

This update fixes the following bugs:

• On some systems that are not case sensitive, the "bootx64" command incorrectly
  launched the GRUB shell instead of booting the GRUB installer. With this update,
  "bootx64" also checks for the existence of the GRUB booting file (BOOTX64),
  which allows for using "bootx64" to boot GRUB on systems which are not case
  sensitive. (BZ#1002809)
  
• A regular expression in the grub-install program could not match multipath
  devices when the "user_friendly_name" option was set to "no". As a consequence,
  the user was not able to install the GRUB utility on a specified device. To fix
  this bug, the regular expression has been updated to match the requested device
  names. As a result, GRUB now installs successfully. (BZ#1121321)
  
• Prior to this update, exiting the GRUB shell menu and rebooting the ISO file
  on an extensible firmware interface (EFI) system changed the boot device path,
  which in turn caused an assert error. As a consequence, GRUB sometimes failed to
  boot. This update prevents the boot device path from being changed, and as a
  result, exiting the GRUB shell and rebooting the ISO file now proceeds as
  expected. (BZ#1129466)
  
• Previously, the biodisk function incorrectly returned "0" instead of the
  correct values of the read and write calls. Due to this bug, the kernel under
  some circumstances detected disk errors when booting, which caused the boot to
  fail. This update fixes the behavior of biodisk, and the boot failure no longer
  occurs. (BZ#1130209)
  
• Previously, booting GRUB with trusted boot (tboot) enabled under some
  circumstances caused the tboot screen to be blue, making the text output
  impossible to read. This update adds a number of conditions for graphic
  initialization to GRUB, which ensure that the tboot screen displays in normal
  colors. (BZ#1128137)
  
• Previously, the graphics_cls() and graphics_init() calls did not correctly
  co-operate with GRUB. As a consequence, booting an ISO file with disabled VGA
  caused the system to encounter an exception and automatically reboot. With this
  update, the behavior of the mentioned calls has been corrected and the system
  now successfully boots with disabled VGA. (BZ#1131205)
  
• When the "splashimage" option parameter was commented out or a serial console
  was enabled in the /boot/EFI/redhat/grub.cfg file, the kernel did not initialize
  the efifb graphic back end when booting an EFI system. As a consequence, VGA
  text consoles displayed a blank screen instead of the intended output. With this
  update, booting an EFI system uses efifb regardless of whether GRUB splash image
  or a serial console are used, and the content of VGA consoles now displays as
  expected. (BZ#1094978, BZ#1074914, BZ#1048681)
  
• Prior to this update, if a splash image was not used when booting an EFI
  system, the serial console displayed a redundant grub_read() failure message
  during the boot process. With this update, the underlying code has been fixed
  and booting an EFI system without the GRUB splash image no longer generates
  redundant failure messages. (BZ#1129436)
  

Users of grub 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/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 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 Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386

Fixes

• BZ - 1048681 - VGA will show any information after comment splashimage in /boot/EFI/redhat/grub.cfg when using EFI
• BZ - 1128137 - Showing a blue screen after installation when tboot is enabled

CVEs

(none)

References

(none)

Red Hat Enterprise Linux Server 6

SRPM
grub-0.97-93.el6.src.rpm	SHA-256: 7732ad4479ab11cfe6d11678eb06c53d6eea012e5abc962fcd8f7d996c7be59c
x86_64
grub-0.97-93.el6.x86_64.rpm	SHA-256: 24f9058edde07b6425a7d2ccdf057bebd5167724f15b6f27e68d50ee0439f049
grub-debuginfo-0.97-93.el6.x86_64.rpm	SHA-256: 51861157b8f5b078b7754871b6b05fdf5dd49bf7fc46a271c3acd1b947560003
i386
grub-0.97-93.el6.i686.rpm	SHA-256: fe45a671744b0fd75119eaeabc61494f73f65c56515c83c86a12ad93cde6270e
grub-debuginfo-0.97-93.el6.i686.rpm	SHA-256: 06e70f26237c7f5a0e60dc4f97b453aba3a87b9f2585afb8ccabfa246e655758

Red Hat Enterprise Linux Workstation 6

SRPM
grub-0.97-93.el6.src.rpm	SHA-256: 7732ad4479ab11cfe6d11678eb06c53d6eea012e5abc962fcd8f7d996c7be59c
x86_64
grub-0.97-93.el6.x86_64.rpm	SHA-256: 24f9058edde07b6425a7d2ccdf057bebd5167724f15b6f27e68d50ee0439f049
grub-debuginfo-0.97-93.el6.x86_64.rpm	SHA-256: 51861157b8f5b078b7754871b6b05fdf5dd49bf7fc46a271c3acd1b947560003
i386
grub-0.97-93.el6.i686.rpm	SHA-256: fe45a671744b0fd75119eaeabc61494f73f65c56515c83c86a12ad93cde6270e
grub-debuginfo-0.97-93.el6.i686.rpm	SHA-256: 06e70f26237c7f5a0e60dc4f97b453aba3a87b9f2585afb8ccabfa246e655758

Red Hat Enterprise Linux Desktop 6

SRPM
grub-0.97-93.el6.src.rpm	SHA-256: 7732ad4479ab11cfe6d11678eb06c53d6eea012e5abc962fcd8f7d996c7be59c
x86_64
grub-0.97-93.el6.x86_64.rpm	SHA-256: 24f9058edde07b6425a7d2ccdf057bebd5167724f15b6f27e68d50ee0439f049
grub-debuginfo-0.97-93.el6.x86_64.rpm	SHA-256: 51861157b8f5b078b7754871b6b05fdf5dd49bf7fc46a271c3acd1b947560003
i386
grub-0.97-93.el6.i686.rpm	SHA-256: fe45a671744b0fd75119eaeabc61494f73f65c56515c83c86a12ad93cde6270e
grub-debuginfo-0.97-93.el6.i686.rpm	SHA-256: 06e70f26237c7f5a0e60dc4f97b453aba3a87b9f2585afb8ccabfa246e655758

Red Hat Enterprise Linux for Scientific Computing 6

SRPM
grub-0.97-93.el6.src.rpm	SHA-256: 7732ad4479ab11cfe6d11678eb06c53d6eea012e5abc962fcd8f7d996c7be59c
x86_64
grub-0.97-93.el6.x86_64.rpm	SHA-256: 24f9058edde07b6425a7d2ccdf057bebd5167724f15b6f27e68d50ee0439f049
grub-debuginfo-0.97-93.el6.x86_64.rpm	SHA-256: 51861157b8f5b078b7754871b6b05fdf5dd49bf7fc46a271c3acd1b947560003

Red Hat Enterprise Linux Server from RHUI 6

SRPM
grub-0.97-93.el6.src.rpm	SHA-256: 7732ad4479ab11cfe6d11678eb06c53d6eea012e5abc962fcd8f7d996c7be59c
x86_64
grub-0.97-93.el6.x86_64.rpm	SHA-256: 24f9058edde07b6425a7d2ccdf057bebd5167724f15b6f27e68d50ee0439f049
grub-debuginfo-0.97-93.el6.x86_64.rpm	SHA-256: 51861157b8f5b078b7754871b6b05fdf5dd49bf7fc46a271c3acd1b947560003
i386
grub-0.97-93.el6.i686.rpm	SHA-256: fe45a671744b0fd75119eaeabc61494f73f65c56515c83c86a12ad93cde6270e
grub-debuginfo-0.97-93.el6.i686.rpm	SHA-256: 06e70f26237c7f5a0e60dc4f97b453aba3a87b9f2585afb8ccabfa246e655758