glibc: arbitrary code execution

CVE-2012-3406 (arbitrary code execution)
The vfprintf function in stdio-common/vfprintf.c in GNU C Library does
not "properly restrict the use of" the alloca function when allocating
the SPECS array, which allows context-dependent attackers to bypass the
FORTIFY_SOURCE format-string protection mechanism and cause a denial of
service (crash) or possibly execute arbitrary code via a crafted format
string using positional parameters and a large number of format specifiers.

CVE-2014-9402 (denial of service)
The nss_dns getnetbyname function will enter an infinite loop if the DNS
backend is activated in the system Name Service Switch configuration and
the DNS resolver receives a positive answer while processing the network
name.