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

RHBA-2014:1228 - device-mapper-multipath bug fix update

Synopsis

device-mapper-multipath bug fix update

Type/Severity

Bug Fix Advisory

Topic

Updated device-mapper-multipath packages that fix several bugs are now available for Red Hat Enterprise Linux 5.

Description

The device-mapper-multipath packages provide tools for managing multipath devices using the device-mapper multipath kernel module.

This update fixes the following bugs:

  • A bug in Device Mapper Multipath (DM-Multipath) allowed the main multipathd thread to free memory that was still being used by other multipathd threads during system shutdown. Consequently, the multipathd daemon terminated unexpectedly due to use-after-free memory corruption. This update avoids this problem by ensuring that memory being used by multipathd threads is freed in the final cleanup upon the exit of multipathd. (BZ#1092603)

  • DM-Multipath allowed configurations with duplicate name aliases mapped to different World Wide Identifiers (WWIDs). However, such configurations could result in path corruption when a device was reloaded and used the paths of another device. This update ensures that DM-Multipath refuses to reload a device if its alias matches another device. DM-Multipath now also warns the user on potentially conflicting aliases. (BZ#1039935)

  • The multipathd daemon could attempt to reconfigure before it was completely set up after receiving the SIGHUP signal on startup. As a consequence, multipathd terminated unexpectedly with a segmentation fault. With this update, multipathd now blocks the SIGHUP signal until it has completed its initialization. (BZ#1086949)

Users of device-mapper-multipath 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
Red Hat Enterprise Linux Desktop5x86_64
Red Hat Enterprise Linux Desktop5i386

Updated Packages

  • device-mapper-multipath-0.4.7-63.el5.ppc.rpm
  • device-mapper-multipath-0.4.7-63.el5.ia64.rpm
  • kpartx-0.4.7-63.el5.s390x.rpm
  • device-mapper-multipath-debuginfo-0.4.7-63.el5.ia64.rpm
  • kpartx-0.4.7-63.el5.ppc.rpm
  • kpartx-0.4.7-63.el5.i386.rpm
  • device-mapper-multipath-debuginfo-0.4.7-63.el5.s390x.rpm
  • device-mapper-multipath-debuginfo-0.4.7-63.el5.x86_64.rpm
  • device-mapper-multipath-0.4.7-63.el5.i386.rpm
  • device-mapper-multipath-0.4.7-63.el5.s390x.rpm
  • device-mapper-multipath-0.4.7-63.el5.x86_64.rpm
  • kpartx-0.4.7-63.el5.ia64.rpm
  • device-mapper-multipath-debuginfo-0.4.7-63.el5.i386.rpm
  • device-mapper-multipath-debuginfo-0.4.7-63.el5.ppc.rpm
  • device-mapper-multipath-0.4.7-63.el5.src.rpm
  • kpartx-0.4.7-63.el5.x86_64.rpm

Fixes

CVEs

(none)

References

(none)

Additional information