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Fedora 22: FEDORA-2016-0480defc94 Critical: glibc DNS Issues

This updates addresses a critical security vulnerability in the DNS resolver related to `AF_UNSPEC` queries with `getaddrinfo` (CVE-2015-7547). It also includes security fixes for CVE-2015-8777 and CVE-2015-1781. It improves `malloc` scalability for applications which start and terminate many threads. The output of `locale -a` is now ASCII-only (previously, it contained ISO-8859-1. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2016-0480defc94 2016-02-17 08:15:11.054716 -------------------------------------------------------------------------------- Name : glibc Product : Fedora 22 Version : 2.21 Release : 11.fc22 URL : https://www.gnu.org/software/libc/ Summary : The GNU libc libraries Description : 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). It also includes security fixes for CVE-2015-8777 and CVE-2015-1781. It improves `malloc` scalability for applications which start and terminate many threads. The output of `locale -a` is now ASCII-only (previously, it contained ISO-8859-1 characters). -------------------------------------------------------------------------------- References: [ 1 ] Bug #1199525 - CVE-2015-1781 glibc: buffer overflow in gethostbyname_r() and related functions with misaligned buffer https://bugzilla.redhat.com/show_bug.cgi?id=1199525 [ 2 ] Bug#1260581 - CVE-2015-8777 glibc: LD_POINTER_GUARD in the environment is not sanitized https://bugzilla.redhat.com/show_bug.cgi?id=1260581 [ 3 ] Bug #1293532 - CVE-2015-7547 glibc: getaddrinfo stack-based buffer overflow https://bugzilla.redhat.com/show_bug.cgi?id=1293532 -------------------------------------------------------------------------------- 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 . All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be found at https://fedoraproject.org/security/ -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. https://lists.fedoraproject.org/admin/lists/package-announce.lists.fedoraproject.org/ . Essential glibc security patch for Fedora 22 tackling DNS resolution flaws alongside enhancements in memory allocation.. Fedora Update, glibc Security, DNS Vulnerability, Memory Management, Open Source Software. . LinuxSecurity.com Team

Feb 17, 2016 Fedora