Issued:
2012-04-30
Updated:
2012-04-30

RHBA-2012:0536 - corosync bug fix update

Synopsis

corosync bug fix update

Type/Severity

Bug Fix Advisory

Topic

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

Description

The corosync packages provide the Corosync Cluster Engine and the C language APIs for Red Hat Enterprise Linux cluster software.

This update fixes the following bug:

  • Previously, the underlying library of corosync did not delete temporary buffers used for Inter-Process Communication (IPC) that are stored in the /dev/shm shared memory file system. Therefore, if the user without proper privileges attempted to establish an IPC connection, the attempt failed with an error message as expected but memory allocated for temporary buffers was not released. This could eventually result in /dev/shm being fully used and Denial of Service. This update modifies the coroipcc library to let applications delete temporary buffers if the buffers were not deleted by the corosync server. The /dev/shm file system is no longer cluttered with needless data in this scenario and IPC connections can be established as expected. (BZ#810917)

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

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/knowledge/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux Resilient Storage for x86_646x86_64
Red Hat Enterprise Linux Resilient Storage for x86_646i386
Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI6x86_64
Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI6i386
Red Hat Enterprise Linux Resilient Storage (for RHEL Server) - AUS6.2x86_64
Red Hat Enterprise Linux High Availability for x86_646x86_64
Red Hat Enterprise Linux High Availability for x86_646i386
Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support6.2x86_64
Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support6.2i386
Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI6x86_64
Red Hat Enterprise Linux High Availability (for RHEL Server) from RHUI6i386
Red Hat Enterprise Linux High Availability (for RHEL Server) - AUS6.2x86_64

Updated Packages

  • corosync-debuginfo-1.4.1-4.el6_2.2.i686.rpm
  • corosynclib-devel-1.4.1-4.el6_2.2.x86_64.rpm
  • corosynclib-devel-1.4.1-4.el6_2.2.i686.rpm
  • corosynclib-1.4.1-4.el6_2.2.i686.rpm
  • corosync-1.4.1-4.el6_2.2.i686.rpm
  • corosync-1.4.1-4.el6_2.2.x86_64.rpm
  • corosynclib-1.4.1-4.el6_2.2.x86_64.rpm
  • corosync-debuginfo-1.4.1-4.el6_2.2.x86_64.rpm
  • corosync-1.4.1-4.el6_2.2.src.rpm

Fixes

CVEs

(none)

References

(none)

Additional information