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-rw-r--r--patches/source/glibc/glibc.CVE-2013-1914.diff53
1 files changed, 53 insertions, 0 deletions
diff --git a/patches/source/glibc/glibc.CVE-2013-1914.diff b/patches/source/glibc/glibc.CVE-2013-1914.diff
new file mode 100644
index 00000000..fc844829
--- /dev/null
+++ b/patches/source/glibc/glibc.CVE-2013-1914.diff
@@ -0,0 +1,53 @@
+From: Andreas Schwab <schwab@suse.de>
+Date: Thu, 21 Mar 2013 14:50:27 +0000 (+0100)
+Subject: Fix stack overflow in getaddrinfo with many results
+X-Git-Url: http://sourceware.org/git/?p=glibc.git;a=commitdiff_plain;h=1cef1b19089528db11f221e938f60b9b048945d7
+
+Fix stack overflow in getaddrinfo with many results
+---
+
+diff --git a/sysdeps/posix/getaddrinfo.c b/sysdeps/posix/getaddrinfo.c
+index d95c2d1..2309281 100644
+--- a/sysdeps/posix/getaddrinfo.c
++++ b/sysdeps/posix/getaddrinfo.c
+@@ -2489,11 +2489,27 @@ getaddrinfo (const char *name, const char *service,
+ __typeof (once) old_once = once;
+ __libc_once (once, gaiconf_init);
+ /* Sort results according to RFC 3484. */
+- struct sort_result results[nresults];
+- size_t order[nresults];
++ struct sort_result *results;
++ size_t *order;
+ struct addrinfo *q;
+ struct addrinfo *last = NULL;
+ char *canonname = NULL;
++ bool malloc_results;
++
++ malloc_results
++ = !__libc_use_alloca (nresults * (sizeof (*results) + sizeof (size_t)));
++ if (malloc_results)
++ {
++ results = malloc (nresults * (sizeof (*results) + sizeof (size_t)));
++ if (results == NULL)
++ {
++ __free_in6ai (in6ai);
++ return EAI_MEMORY;
++ }
++ }
++ else
++ results = alloca (nresults * (sizeof (*results) + sizeof (size_t)));
++ order = (size_t *) (results + nresults);
+
+ /* Now we definitely need the interface information. */
+ if (! check_pf_called)
+@@ -2664,6 +2680,9 @@ getaddrinfo (const char *name, const char *service,
+
+ /* Fill in the canonical name into the new first entry. */
+ p->ai_canonname = canonname;
++
++ if (malloc_results)
++ free (results);
+ }
+
+ __free_in6ai (in6ai);
+