RHBA-2013:0713 - Bug Fix Advisory

Topic

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

Description

The Corosync packages provide the Corosync Cluster Engine and C Application
Programming Interfaces (APIs) for Red Hat Enterprise Linux cluster software.

This update fixes the following bug:

• When running applications which used the Corosync IPC library, some messages

in the dispatch() function were lost or duplicated. This update properly checks
the return values of the dispatch_put() function, returns the correct remaining
bytes in the IPC ring buffer, and ensures that the IPC client is correctly
informed about the real number of messages in the ring buffer. Now, messages in
the dispatch() function are no longer lost or duplicated. (BZ#929096)

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

• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 6.1 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Update Support 6.1 i386
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 6.1 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 6.1 i386

Fixes

• BZ - 929096 - CPG: Corosync can duplicate and/or lost messages - Local IPC

CVEs

(none)

References

(none)