RHBA-2010:0769 - Bug Fix Advisory

Topic

Updated glibc packages that resolve an issue 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.

These updated glibc packages fix the following bug:

• When the 'MALLOC_CHECK_' feature was enabled, a race condition in the 'free'

function resulted in an internal heap corruption in a multi-threaded
application. With this update, proper locking was added to prevent the
corruption. (BZ#637067)

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

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
https://access.redhat.com/kb/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 - 637067 - free() race in mcheck hooks

CVEs

(none)

References

(none)