Gentoo Linux Security Advisory 201702-11 - Multiple vulnerabilities have been found in the GNU C Library, the worst of which allows context-dependent attackers to execute arbitrary code. Versions less than 2.23-r3 are affected.
fa2a94198c76126434e575483adb24e98f6fc6067b9bede81d1fab17552eb3e5Red Hat Security Advisory 2016-2573-02 - The glibc packages provide the standard C libraries, POSIX thread libraries, standard math libraries, and the name service cache daemon used by multiple programs on the system. Without these libraries, the Linux system cannot function correctly. Security Fix: A stack overflow vulnerability was found in _nss_dns_getnetbyname_r. On systems with nsswitch configured to include "networks: dns" with a privileged or network-facing service that would attempt to resolve user-provided network names, an attacker could provide an excessively long network name, resulting in stack corruption and code execution.
73af8c49aae2ea595d4a81807a2cbcdcbd04c82b5c9359f6943ef80ef65cee45Ubuntu Security Notice 2985-2 - USN-2985-1 fixed vulnerabilities in the GNU C Library. The fix for CVE-2014-9761 introduced a regression which affected applications that use the libm library but were not fully restarted after the upgrade. This update removes the fix for CVE-2014-9761 and a future update will be provided to address this issue. Various other issues were also addressed.
2a6f679b626f83a064fc3dc159f612a216d5445b2d132256da0fb78b6542247dUbuntu Security Notice 2985-1 - Martin Carpenter discovered that pt_chown in the GNU C Library did not properly check permissions for tty files. A local attacker could use this to gain administrative privileges or expose sensitive information. Robin Hack discovered that the Name Service Switch (NSS) implementation in the GNU C Library did not properly manage its file descriptors. An attacker could use this to cause a denial of service (infinite loop). Various other issues were also addressed.
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