eglibc - security update

Several vulnerabilities have been fixed in the Debian GNU C Library,
eglibc:

• CVE-2015-7547
  The Google Security Team and Red Hat discovered that the glibc
  host name resolver function, getaddrinfo, when processing
  AF_UNSPEC queries (for dual A/AAAA lookups), could mismange its
  internal buffers, leading to a stack-based buffer overflow and
  arbitrary code execution. This vulnerability affects most
  applications which perform host name resolution using getaddrinfo,
  including system services.
• The following fixed vulnerabilities currently lack CVE assignment

Andreas Schwab reported a memory leak (memory allocation without a
matching deallocation) while processing certain DNS answers in
getaddrinfo, related to the _nss_dns_gethostbyname4_r function.
This vulnerability could lead to a denial of service.

For Debian 6 Squeeze, these issues have been fixed in eglibc version
eglibc_2.11.3-4+deb6u11. In addition this version corrects the fix for
CVE-2014-9761
in Squeeze, which have wrongly marked a few symbols as
public instead of private.

While it is only necessary to ensure that all processes are not using
the old eglibc anymore, it is recommended to reboot the machines after
applying the security upgrade.

We recommend you to upgrade your eglibc packages.