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| author | Andreas Schwab <schwab@redhat.com> | 2012-06-22 11:10:31 -0700 |
|---|---|---|
| committer | Carlos O'Donell <carlos_odonell@mentor.com> | 2012-06-22 11:10:31 -0700 |
| commit | 0479b305c5b7c8e3fa8e3002982cf8cac02b842e (patch) | |
| tree | f72a6cb6c122c086d6e7b5989e9d746c0c3431a1 /elf/dl-close.c | |
| parent | 0e3933b96344ab9c0ac633c19f4ebfdede5375d4 (diff) | |
| download | glibc-0479b305c5b7c8e3fa8e3002982cf8cac02b842e.tar glibc-0479b305c5b7c8e3fa8e3002982cf8cac02b842e.tar.gz glibc-0479b305c5b7c8e3fa8e3002982cf8cac02b842e.tar.bz2 glibc-0479b305c5b7c8e3fa8e3002982cf8cac02b842e.zip | |
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 'elf/dl-close.c')
| -rw-r--r-- | elf/dl-close.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c index d232294665..a250ea5e3e 100644 --- a/elf/dl-close.c +++ b/elf/dl-close.c @@ -1,5 +1,5 @@ /* Close a shared object opened by `_dl_open'. - Copyright (C) 1996-2007, 2009, 2010, 2011 Free Software Foundation, Inc. + Copyright (C) 1996-2012 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 @@ -118,17 +118,8 @@ _dl_close_worker (struct link_map *map) if (map->l_direct_opencount > 0 || map->l_type != lt_loaded || dl_close_state != not_pending) { - if (map->l_direct_opencount == 0) - { - if (map->l_type == lt_loaded) - dl_close_state = rerun; - else if (map->l_type == lt_library) - { - struct link_map **oldp = map->l_initfini; - map->l_initfini = map->l_orig_initfini; - _dl_scope_free (oldp); - } - } + if (map->l_direct_opencount == 0 && map->l_type == lt_loaded) + dl_close_state = rerun; /* There are still references to this object. Do nothing more. */ if (__builtin_expect (GLRO(dl_debug_mask) & DL_DEBUG_FILES, 0)) |