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Fedora 23 Glibc Security Update: Critical DNS Resolver Buffer Overflow

fedora
Calendar Grey February 17, 2016
Dist Fedora Esm H88
Essential security patch for glibc tackling DNS resolver vulnerabilities and buffer overflow in Fedora 23 update.
This updates addresses a critical security vulnerability in the DNS resolver related to `AF_UNSPEC` queries with `getaddrinfo` (CVE-2015-7547)

Summary

The glibc package contains standard libraries which are used by

multiple programs on the system. In order to save disk space and

memory, as well as to make upgrading easier, common system code is

kept in one place and shared between programs. This particular package

contains the most important sets of shared libraries: the standard C

library and the standard math library. Without these two libraries, a

Linux system will not function.

Update Information:

This updates addresses a critical security vulnerability in the DNS resolver related to `AF_UNSPEC` queries with `getaddrinfo` (CVE-2015-7547). In addition, a bug that causes Hesiod lookups to fail with a crash is fixed.

Topics%20covered

Topics Covered

security advisory buffer overflow critical software update Fedora glibc DNS resolver

Change Log

References


[ 1 ] Bug #1293532 - CVE-2015-7547 glibc: getaddrinfo stack-based buffer overflow https://bugzilla.redhat.com/show_bug.cgi?id=1293532

Update Instructions

This update can be installed with the "yum" update program. Use su -c 'yum update glibc' at the command line. For more information, refer to "Managing Software with yum", available at .

Severity
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Name: glibc
Product: Fedora 23
Version: 2.22
Release: 9.fc23
URL: https://www.gnu.org/software/libc/
Summary: The GNU libc libraries

Topics%20covered

Topics Covered

security advisory buffer overflow critical software update Fedora glibc DNS resolver

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