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