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For PR 14055, add bounds check to _dl_show_auxv().

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This commit is contained in:
Paul Pluzhnikov
2012-05-02 14:35:30 -07:00
parent ff8a695b6d
commit 171a70b4c0
3 changed files with 10 additions and 3 deletions
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6
elf/dl-sysdep.c
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@ -1,5 +1,5 @@
/* Operating system support for run-time dynamic linker. Generic Unix version.
Copyright (C) 1995-1998,2000-2008,2009,2010
Copyright (C) 1995-1998,2000-2010,2012
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -303,7 +303,9 @@ _dl_show_auxv (void)
};
unsigned int idx = (unsigned int) (av->a_type - 2);
if ((unsigned int) av->a_type < 2u || auxvars[idx].form == ignore)
if ((unsigned int) av->a_type < 2u
|| (idx < sizeof (auxvars) / sizeof (auxvars[0])
&& auxvars[idx].form == ignore))
continue;
assert (AT_NULL == 0);