diff -r 9227d2a2c080 -r c4d124ed9f8e patches/glibc/2_9/120-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch --- a/patches/glibc/2_9/120-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch Sat Apr 11 19:03:02 2009 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,35 +0,0 @@ -Original patch from: gentoo/src/patchsets/glibc/2.9/0050_all_glibc-_nss_dns_gethostbyaddr2_r-check-and-adjust-the-buffer-alignment.patch - --= BEGIN original header =- -http://sourceware.org/ml/libc-alpha/2009-01/msg00000.html - -From 8ad7030880eaa18dcabf8e284e79026301fd3fa4 Mon Sep 17 00:00:00 2001 -From: Ulrich Drepper -Date: Thu, 8 Jan 2009 00:02:38 +0000 -Subject: [PATCH] (_nss_dns_gethostbyaddr2_r): Check and adjust the buffer alignment. - --= END original header =- - -diff -durN glibc-2_9.orig/resolv/nss_dns/dns-host.c glibc-2_9/resolv/nss_dns/dns-host.c ---- glibc-2_9.orig/resolv/nss_dns/dns-host.c 2008-11-12 08:52:20.000000000 +0100 -+++ glibc-2_9/resolv/nss_dns/dns-host.c 2009-02-02 22:00:36.000000000 +0100 -@@ -364,6 +364,19 @@ - int n, status; - int olderr = errno; - -+ uintptr_t pad = -(uintptr_t) buffer % __alignof__ (struct host_data); -+ buffer += pad; -+ buflen = buflen > pad ? buflen - pad : 0; -+ -+ if (__builtin_expect (buflen < sizeof (struct host_data), 0)) -+ { -+ *errnop = ERANGE; -+ *h_errnop = NETDB_INTERNAL; -+ return NSS_STATUS_TRYAGAIN; -+ } -+ -+ host_data = (struct host_data *) buffer; -+ - if (__res_maybe_init (&_res, 0) == -1) - return NSS_STATUS_UNAVAIL; -