RHBA-2015:1277 - Bug Fix Advisory

Topic

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

Description

The bash packages provide the Bash (Bourne-again shell) shell, which is the
default shell for Red Hat Enterprise Linux.

This update fixes the following bugs:

• Prior to this update, Bash refused to import previously exported functions

whose names contained a hyphen. As a consequence, scripts that used such
functions did not work properly, and Bash printed the following error message:

bash: error importing function definition for `BASH_FUNC_function-name'

With this update, Bash accepts hyphens in the names of imported functions.
(BZ#1148507)

• Previously, Bash incorrectly parsed function definitions containing a

here-document that ended with the end-of-file or end-of-string character.
Consequently, Bash accessed an invalid memory segment when the parsed
function was copied, and Bash terminated with a segmentation fault. This problem
has been fixed. As a result, Bash no longer crashes when the aforementioned
function definitions are used. (BZ#1150544, BZ#1155455)

• The section in the Bash man page describing the ulimit command did not contain

the fact that 512-byte blocks are used for the "-c" and "-f" options in POSIX
mode. This information has now been added. (BZ#1119587)

Users of bash 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.

For details on how to apply this update, refer to:

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

Fixes

• BZ - 1148507 - Importing Exported Functions with Hyphens

CVEs

(none)

References

(none)