RHBA-2014:1545 - Bug Fix Advisory

Topic

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

Description

The util-linux-ng packages contain a large variety of low-level system utilities
that are necessary for a Linux operating system to function.

This update fixes the following bugs:

• Previously, the behavior of the "acl" option was not correctly documented in

the mount(8) manual page. The manual page now clarifies that the "acl" option is
specific to the file system and not a default mount option. (BZ#999625)

• The blkid(8) manual page now documents the behavior of the "-w" option

correctly, mentioning that "blkid -w" always writes to the default cache file
even if the output has been redirected elsewhere. (BZ#1004021)

• Previously, using the fdisk command on multipath mapped devices failed with a

"floating point exception" error. This bug has been fixed and fdisk now
successfully executes on multipath mapped devices. (BZ#1011590)

• The blockdev(8) manual page now clarifies the behavior of the "--setbsz"

option, which sets the block size on file descriptors opening the block size.
(BZ#1016470)

• Previously, the findmnt command did not handle correctly trailing forward

slashes ("/") in the entries of the /proc/mounts file. As a consequence, findmnt
sometimes failed to match the correct path. This bug has been fixed and the
findmnt command now matches the correct path independently of the trailing
slash. (BZ#1031641)

• The rename(1) manual page referred to the non-existing mmv(1) manual page.

This reference has been removed. (BZ#1033309)

• The PERMISSIONS section of the taskset(1) manual page has been corrected to

mention that a user is allowed to change the affinity of processes he owns, but
a CAP_SYS_NICE flag is required to change the affinity of another user's
process. (BZ#1039187)

• Previously, the "hwclock --systohc" command could enter an indefinite loop on

busy or virtual machines. Consequently, the machine could not complete the
shutdown or reboot a process. A patch with a different mechanism has been
applied, and the "hwclock --systohc" command now completes successfully.
(BZ#1072583)

• Previously, the kernel did not support unsharing for PID name spaces. With

this update, a series of patches has been applied to the relevant kernel code to
support the unshare() system call for PID name spaces. (BZ#1049055)

• Previously, when attempting to use the flock command to lock a file in NFSv4

volumes, the command failed with the following error:

[nfs4] flock nfs file fail: Bad file descriptor

This bug has been fixed and now the flock command executes successfully on NFSv4
volumes. (BZ#1097715)

• Previously, the kill command which is used by the ntfs service did not check

the "errno" value after calling the strtol() function. As a consequence, using
the "service netfs stop" command could kill every process on the system if there
were more than 100 000 processes running at the same time. This bug has been
fixed, and using the "service netfs stop" command only stops ntfs as expected.
(BZ#1104575)

In addition, this update adds the following enhancements:

• This update implements the lslogins(1) command which lists information about

accounts on the system in a easy to read format. (BZ#619521)

• This update adds the nsenter utility to the util-linux-ng packages. It allows

to run commands in kernel namespaces. If the namespace does not exist, nsenter
creates a new one and then executes the command. (BZ#957906)

Users of util-linux-ng 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/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
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 999625 - mount does not appear to be correctly documented for default mount options
• BZ - 1004021 - document blkid -w behaviour
• BZ - 1031641 - findmnt should handle better trailing "/" in /proc/mounts entries
• BZ - 1033309 - man rename references mmv command which is not available
• BZ - 1072583 - hwclock --systohc can hang on busy or virtual machine

CVEs

(none)

References

(none)