Upstream commits: commit a071766ebfd853179ac39f9773f894029bf86d36 Author: Andreas Schwab Date: Thu Mar 20 15:05:25 2014 +0100 Fix use of half-initialized result in getaddrinfo when using nscd (bug 16743) This fixes a bug in the way the results from __nscd_getai are collected: for every returned result a new entry is first added to the gaih_addrtuple list, but if that result doesn't match the request this entry remains uninitialized. So for this non-matching result an extra result with uninitialized content is returned. To reproduce (with nscd running): $ getent ahostsv4 localhost 127.0.0.1 STREAM localhost 127.0.0.1 DGRAM 127.0.0.1 RAW (null) STREAM (null) DGRAM (null) RAW commit 8dc9751764eb1bedf06d19695524b31a16773413 Author: Andreas Schwab Date: Wed May 7 11:47:20 2014 +0200 Fix parsing of getai result from nscd for IPv6-only request Index: b/sysdeps/posix/getaddrinfo.c =================================================================== --- a/sysdeps/posix/getaddrinfo.c +++ b/sysdeps/posix/getaddrinfo.c @@ -725,6 +725,18 @@ gaih_inet (const char *name, const struc { socklen_t size = (air->family[i] == AF_INET ? INADDRSZ : IN6ADDRSZ); + + if (!((air->family[i] == AF_INET + && req->ai_family == AF_INET6 + && (req->ai_flags & AI_V4MAPPED) != 0) + || req->ai_family == AF_UNSPEC + || air->family[i] == req->ai_family)) + { + /* Skip over non-matching result. */ + addrs += size; + continue; + } + if (*pat == NULL) { *pat = addrfree++;