RHBA-2011:0689 - Bug Fix Advisory

Topic

Updated bash packages that fix three bugs are now available for Red Hat
Enterprise Linux 6.

Description

Bash (Bourne-again shell) is the default shell for Red Hat Enterprise Linux.

This update fixes the following bugs:

• When using arithmetic evaluation on an associative array with integer values,

an attempt to provide an invalid subscript caused Bash to terminate unexpectedly
with a segmentation fault. This update applies a patch that corrects this error,
and providing an invalid subscript no longer causes the bash interpreter to
crash. (BZ#618289)

• Prior to this update, the Bash interpreter reported broken pipe errors for

both external and built-in commands. Since these errors are only relevant for
external commands, this update adapts the underlying source code to suppress the
broken pipe error messages for built-in commands. As a result, only relevant
messages are now presented to user. (BZ#664468)

• Previous version of the bash(1) manual page did not provide a clear

description of the "break", "continue", and "suspend" built-in commands. This
update corrects this error, and extends the manual page to provide accurate and
complete descriptions of these commands. (BZ#619704)

All users are advised to upgrade to these updated packages, which fix these
bugs.

Solution

Before applying this update, make sure that all previously-released errata
relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red
Hat Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

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 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 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 - 618289 - [abrt] bash-4.1.2-3.el6: bind_int_variable: Process /bin/bash was killed by signal 11 (SIGSEGV)
• BZ - 619704 - The bash's man page doesn't describe some of bash builtin commands clearly.

CVEs

(none)

References

(none)