RHBA-2010:0450 - Bug Fix Advisory

Topic

Updated glibc packages that fix two bugs are now available.

Description

The glibc packages contain the standard C libraries used by multiple
programs on the system. These packages contain the standard C and the
standard math libraries. Without these two libraries, the Linux system
cannot function properly.

This update applies the following bug fixes:

• submitting an AIO write request initially requires creating a helper

thread to handle the request. If the creation of this thread fails, a
corruption of glibc internal data structures can result which can cause a
crash when the next AIO request is submitted. This update corrects this by
making sure the internal structures remain consistent. (BZ#589871)

• missing unwind information can cause pthread cleanup handlers to be

missed when a thread is canceled. This update adds unwind information to
all functions in the standard C library, even on platforms that do not emit
such information by default. (BZ#593047)

All users are advised to upgrade to these updated packages, which resolve
these issue.

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
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 589871 - If pthread_create fails in aio_write, requests linked list is corrupted
• BZ - 594617 - pthread cleanup handler is not invoked during thread cancellation

CVEs

(none)

References

(none)