Issued:
2012-05-10
Updated:
2012-05-10

RHBA-2012:0561 - bash bug fix update

Synopsis

bash bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated bash packages that fix one bug are now available for Red Hat Enterprise Linux 6.

Description

The GNU Bourne Again shell (Bash) is a shell and command language interpreter compatible with the Bourne shell (sh). Bash is the default shell for Red Hat Enterprise Linux.

This update fixes the following bug:

  • When a SIGCHLD signal was received in job control mode and a handler for the signal was installed, Bash called the trap handler within the signal handler itself. This was unsafe and could cause Bash to enter a deadlock or to terminate unexpectedly with a segmentation fault due to memory corruption. With this update, the trap handler is now called outside of the signal handler, and Bash no longer enters a deadlock, neither crashes in this scenario. (BZ#814271)

All users of bash are advised to upgrade to these updated packages, which fix this bug.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

ProductVersionArch
Red Hat Storage2.0x86_64
Red Hat Storage for Public Cloud (via RHUI)2.0x86_64
Red Hat Gluster Storage Server for On-premise2.0x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux for Scientific Computing6x86_64
Red Hat Enterprise Linux for Power, big endian6ppc64
Red Hat Enterprise Linux for Power, big endian - Extended Update Support6.2ppc64
Red Hat Enterprise Linux for IBM z Systems6s390x
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support6.2s390x
Red Hat Enterprise Linux Workstation6x86_64
Red Hat Enterprise Linux Workstation6i386
Red Hat Enterprise Linux Server6x86_64
Red Hat Enterprise Linux Server6i386
Red Hat Enterprise Linux Server from RHUI6x86_64
Red Hat Enterprise Linux Server from RHUI6i386
Red Hat Enterprise Linux Server - Retired Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2x86_64
Red Hat Enterprise Linux Server - Extended Update Support from RHUI6.2i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6x86_64
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension6i386
Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems)6s390x
Red Hat Enterprise Linux Server - AUS6.2x86_64
Red Hat Enterprise Linux Desktop6x86_64
Red Hat Enterprise Linux Desktop6i386

Updated Packages

  • bash-4.1.2-9.el6_2.i686.rpm
  • bash-4.1.2-9.el6_2.src.rpm
  • bash-doc-4.1.2-9.el6_2.i686.rpm
  • bash-debuginfo-4.1.2-9.el6_2.ppc64.rpm
  • bash-doc-4.1.2-9.el6_2.ppc64.rpm
  • bash-4.1.2-9.el6_2.x86_64.rpm
  • bash-debuginfo-4.1.2-9.el6_2.x86_64.rpm
  • bash-4.1.2-9.el6_2.ppc64.rpm
  • bash-debuginfo-4.1.2-9.el6_2.s390x.rpm
  • bash-doc-4.1.2-9.el6_2.s390x.rpm
  • bash-4.1.2-9.el6_2.s390x.rpm
  • bash-debuginfo-4.1.2-9.el6_2.i686.rpm
  • bash-doc-4.1.2-9.el6_2.x86_64.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information