diff options
Diffstat (limited to 'source/l/glibc/glibc.CVE-2013-1914.diff')
| -rw-r--r-- | source/l/glibc/glibc.CVE-2013-1914.diff | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/source/l/glibc/glibc.CVE-2013-1914.diff b/source/l/glibc/glibc.CVE-2013-1914.diff new file mode 100644 index 000000000..fc844829c --- /dev/null +++ b/source/l/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); + |