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authorAndreas Schwab <schwab@redhat.com>2012-06-22 11:10:31 -0700
committerCarlos O'Donell <carlos_odonell@mentor.com>2012-06-22 11:10:31 -0700
commit0479b305c5b7c8e3fa8e3002982cf8cac02b842e (patch)
treef72a6cb6c122c086d6e7b5989e9d746c0c3431a1 /include
parent0e3933b96344ab9c0ac633c19f4ebfdede5375d4 (diff)
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Fix invalid memory access in do_lookup_x.
[BZ #13579] Do not free l_initfini and allow it to be reused on subsequent dl_open calls for the same library. This fixes the invalid memory access in do_lookup_x when the previously free'd l_initfini was accessed through l_searchlist when a library had been opened for the second time.
Diffstat (limited to 'include')
-rw-r--r--include/link.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/link.h b/include/link.h
index 2eb3179475..f0c8ad521f 100644
--- a/include/link.h
+++ b/include/link.h
@@ -1,6 +1,6 @@
/* Data structure for communication from the run-time dynamic linker for
loaded ELF shared objects.
- Copyright (C) 1995-2006, 2007, 2009, 2010, 2011 Free Software Foundation, Inc.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -191,6 +191,9 @@ struct link_map
during LD_TRACE_PRELINKING=1
contains any DT_SYMBOLIC
libraries. */
+ unsigned int l_free_initfini:1; /* Nonzero if l_initfini can be
+ freed, ie. not allocated with
+ the dummy malloc in ld.so. */
/* Collected information about own RPATH directories. */
struct r_search_path_struct l_rpath_dirs;
@@ -239,9 +242,6 @@ struct link_map
/* List of object in order of the init and fini calls. */
struct link_map **l_initfini;
- /* The init and fini list generated at startup, saved when the
- object is also loaded dynamically. */
- struct link_map **l_orig_initfini;
/* List of the dependencies introduced through symbol binding. */
struct link_map_reldeps