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GNU C Library master sources branch, master, updated. glibc-2.13-251-g01f16ab

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- Log -----------------------------------------------------------------;a=commitdiff;h=01f16ab0a581838d44ad79e82c0c3e1691d8506e

commit 01f16ab0a581838d44ad79e82c0c3e1691d8506e
Author: Ulrich Drepper <>
Date:   Mon May 30 01:55:40 2011 -0400

    Prevent loader from loading itself

diff --git a/ChangeLog b/ChangeLog
index 70dbc40..bb7f02e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-05-30  Ulrich Drepper  <>
+	* elf/rtld.c (dl_main): Don't allow the loader to load itself.
 2011-05-29  Ulrich Drepper  <>
 	[BZ #12350]
diff --git a/elf/rtld.c b/elf/rtld.c
index 174954b..9eb9289 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -1076,6 +1076,14 @@ of this helper program; chances are you did not intend to run this program.\n\
       /* Now the map for the main executable is available.  */
       main_map = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
+      if (GL(dl_rtld_map).l_info[DT_SONAME] != NULL
+	  && main_map->l_info[DT_SONAME] != NULL
+	  && strcmp ((const char *) D_PTR (&GL(dl_rtld_map), l_info[DT_STRTAB])
+		     + GL(dl_rtld_map).l_info[DT_SONAME]->d_un.d_val,
+		     (const char *) D_PTR (main_map, l_info[DT_STRTAB])
+		     + main_map->l_info[DT_SONAME]->d_un.d_val) == 0)
+	_dl_fatal_printf ("loader cannot load itself\n");
       phdr = main_map->l_phdr;
       phnum = main_map->l_phnum;
       /* We overwrite here a pointer to a malloc()ed string.  But since


Summary of changes:
 ChangeLog  |    4 ++++
 elf/rtld.c |    8 ++++++++
 2 files changed, 12 insertions(+), 0 deletions(-)

GNU C Library master sources

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