Multiple stack-based buffer overflows in the (1) send_dg and (2)
send_vc functions in the libresolv library in the GNU C Library (aka
glibc or libc6) before 2.23 allow remote attackers to cause a denial
of service (crash) or possibly execute arbitrary code via a crafted
DNS response that triggers a call to the getaddrinfo function with the
AF_UNSPEC or AF_INET6 address family, related to performing "dual
A/AAAA DNS queries" and the libnss_dns.so.2 NSS module.
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