Issued:
2014-09-16
Updated:
2014-09-16

RHBA-2014:1214 - ksh bug fix update

Synopsis

ksh bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated ksh packages that fix two bugs are now available for Red Hat Enterprise Linux 5.

Description

KornShell (KSH) is a Unix shell developed by AT&T Bell Laboratories, which is backward-compatible with the Bourne shell (Bash) and includes many features of the C shell. The most recent version is KSH-93. KornShell complies with the POSIX.2 standard (IEEE Std 1003.2-1992).

This update fixes the following bugs:

  • Previously, the ksh shell forking during variable assignment failed to close the file descriptors in the child process prior to execution. This could lead to a file descriptor leak, and certain applications could consequently report error messages. With this update, file descriptors are marked to be closed on execution if appropriate, so file descriptor leaks no longer occur. (BZ#1058563)

  • Previously, the brace expansion, a mechanism by which arbitrary strings may be generated, could not be disabled using the "set +B" command. The underlying source code has been fixed, and now it is possible to disable brace expansion when needed. (BZ#1079947)

Users of ksh 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/site/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for Power, big endian5ppc
Red Hat Enterprise Linux for IBM z Systems5s390x
Red Hat Enterprise Linux Workstation5x86_64
Red Hat Enterprise Linux Workstation5i386
Red Hat Enterprise Linux Server5x86_64
Red Hat Enterprise Linux Server5ia64
Red Hat Enterprise Linux Server5i386
Red Hat Enterprise Linux Server from RHUI5x86_64
Red Hat Enterprise Linux Server from RHUI5i386

Updated Packages

  • ksh-20100621-20.el5.x86_64.rpm
  • ksh-debuginfo-20100621-20.el5.ia64.rpm
  • ksh-20100621-20.el5.src.rpm
  • ksh-20100621-20.el5.ppc.rpm
  • ksh-debuginfo-20100621-20.el5.x86_64.rpm
  • ksh-20100621-20.el5.ia64.rpm
  • ksh-debuginfo-20100621-20.el5.s390x.rpm
  • ksh-20100621-20.el5.s390x.rpm
  • ksh-debuginfo-20100621-20.el5.ppc.rpm
  • ksh-debuginfo-20100621-20.el5.i386.rpm
  • ksh-20100621-20.el5.i386.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information