From 2d571cd1258ab7c20a49e802e31870041dc10a56 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 24 May 2006 04:07:18 +0000 Subject: * nis/nis_domain_of_r.c (nis_domain_of_r): Add missing buffer overflow test. --- nis/nis_domain_of_r.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'nis/nis_domain_of_r.c') diff --git a/nis/nis_domain_of_r.c b/nis/nis_domain_of_r.c index 1fedcfe074..e2db146038 100644 --- a/nis/nis_domain_of_r.c +++ b/nis/nis_domain_of_r.c @@ -1,4 +1,4 @@ -/* Copyright (c) 1997, 2004 Free Software Foundation, Inc. +/* Copyright (c) 1997, 2004, 2006 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Thorsten Kukuk , 1997. @@ -29,6 +29,7 @@ nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen) if (buffer == NULL) { + erange: __set_errno (ERANGE); return NULL; } @@ -44,7 +45,11 @@ nis_domain_of_r (const_nis_name name, char *buffer, size_t buflen) cptr_len = strlen (cptr); if (cptr_len == 0) - return strcpy (buffer, "."); + { + if (buflen < 2) + goto erange; + return strcpy (buffer, "."); + } if (__builtin_expect (cptr_len >= buflen, 0)) { -- cgit 1.4.1