RHBA-2014:1213 - Bug Fix Advisory

Topic

Updated glibc packages that fix several bugs are now available for Red Hat
Enterprise Linux 5.

Description

The glibc packages provide the standard C libraries (libc), POSIX thread
libraries (libpthread), standard math libraries (libm), and the Name Server
Caching Daemon (nscd) used by multiple programs on the system. Without these
libraries, the Linux system cannot function correctly.

This update fixes the following bugs:

• An attempt to start an already running service by using the "service" command

should result in a zero exit code. However, due to an error in the nscd init
script, the "service nscd start" command returned a non-zero exit code. This
update corrects the nscd init script and this command returns a zero exit code
as expected in the described situation. (BZ#979413)

• The getgroups() function incorrectly accepted a negative size value and then

terminated unexpectedly if a related program was compiled with optimizations
enabled and the FORTIFY_SOURCE parameter was set to 2. This update corrects the
getgroups() function to return an EINVAL error in such cases. (BZ#995207)

• The size of the L3 cache in certain CPUs for SMP (Symmetric Multiprocessing)

servers was not correctly detected. The incorrect cache size detection resulted
in less than optimal performance for routines that used this information,
including the memset() function. To fix this problem, the cache size detection
has been corrected and core routines including memset() work with the expected
efficiency. (BZ#1003420)

• The getnameinfo() function previously failed on a reverse lookup of an IP

address that had a large number of PTR records associated with it. This problem
has been corrected and getnameinfo() now correctly returns one of the PTR
records as the response. (BZ#1020486)

Users of glibc 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

• 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 - 1020486 - glibc getnameinfo call fails when many PTR records are associated with an IP

CVEs

(none)

References

(none)