RHBA-2015:0240 - Bug Fix Advisory

Topic

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

Description

The at packages provide a utility for time-oriented job control. The at
utility reads commands from standard input or from a specified file and
allows you to specify that the commands will be run at a particular
time.

This update fixes the following bugs:

• Due to incorrect race condition handling in the "atd" daemon, "atd" terminated

unexpectedly. With this update, "atd" handles the race condition correctly, so
that now "atd" no longer terminates in the described scenario. (BZ#994201)

• Previously, the "at" command was not properly checking the return value of the

fclose() function call. As a consequence, if the /var/spool/at file system
filled up, "at" could leave empty stale files in the spool directory. With this
update, "at" properly checks the return value from fclose(), and "at" no longer
leaves empty files in spool in the described scenario. (BZ#1166882)

Users of at 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 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 6 x86_64
• 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 - 712079 - Package "at" should depend on chkconfig
• BZ - 784814 - missing options in --help
• BZ - 1166882 - "at" leaves zero-byte-sized files in /var/spool/at if filesystem is full / if jobspec can't be written
• BZ - 1192037 - Help and man page out of sync

CVEs

(none)

References

(none)