about summary refs log tree commit diff
path: root/nscd/nscd_getai.c
diff options
context:
space:
mode:
authorJakub Jelinek <jakub@redhat.com>2009-05-15 21:17:08 -0700
committerUlrich Drepper <drepper@redhat.com>2009-05-15 21:17:08 -0700
commitcfe1fc1013d0e7e4863c974fa0e78891cc0a2ed2 (patch)
tree77134fa880e4dd6db41a701034607e67a4dd9be1 /nscd/nscd_getai.c
parent3b1b533bc3239ef6df1e40e0088e7270ac060be6 (diff)
downloadglibc-cfe1fc1013d0e7e4863c974fa0e78891cc0a2ed2.tar.gz
glibc-cfe1fc1013d0e7e4863c974fa0e78891cc0a2ed2.tar.xz
glibc-cfe1fc1013d0e7e4863c974fa0e78891cc0a2ed2.zip
Robustify libc-side nscd database reader.
The nscd database mapped in processes can change at any time.  We
have to be more vigilant when it comes to using that memory.  Test
the data entries are valid in their entire size, don't read data
again from memory once we verified it, and make sure the trailing
pointer is not going off the deep end.
Diffstat (limited to 'nscd/nscd_getai.c')
-rw-r--r--nscd/nscd_getai.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/nscd/nscd_getai.c b/nscd/nscd_getai.c
index 674a5e7514..d1c5cd14e9 100644
--- a/nscd/nscd_getai.c
+++ b/nscd/nscd_getai.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+/* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009
+   Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@redhat.com>, 2004.
 
@@ -75,7 +76,7 @@ __nscd_getai (const char *key, struct nscd_ai_result **result, int *h_errnop)
   if (mapped != NO_MAPPING)
     {
       struct datahead *found = __nscd_cache_search (GETAI, key, keylen,
-						    mapped);
+						    mapped, sizeof ai_resp);
       if (found != NULL)
 	{
 	  respdata = (char *) (&found->data[0].aidata + 1);