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Test for mprotect failure in dl-load.c (bug 12492).

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Pierre Ynard 2013-06-28 21:43:42 +00:00 committed by Joseph Myers
parent ce61a2ad2e
commit 0432680e8c
3 changed files with 23 additions and 13 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2013-06-28 Pierre Ynard <linkfanel@yahoo.fr>
[BZ #12492]
* elf/dl-load.c (_dl_map_object_from_fd): Test for failure of
mprotect making __stack_prot writable.
2013-06-28 Nathan Froyd <froydnj@codesourcery.com>
Joseph Myers <joseph@codesourcery.com>

24
NEWS
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@ -10,18 +10,18 @@ Version 2.18
* The following bugs are resolved with this release:
2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
11561, 12310, 12387, 12515, 12723, 13550, 13889, 13951, 13988, 14142,
14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496, 14582,
14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952, 14964,
14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006, 15007,
15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078, 15084,
15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283, 15285,
15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336, 15337,
15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394, 15395,
15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426, 15429,
15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488, 15490,
15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583, 15618,
15627, 15631, 15654, 15655, 15666, 15667, 15674.
11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674.
* CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
#15078).

6
elf/dl-load.c
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@ -1487,7 +1487,11 @@ cannot allocate TLS data structures for initial thread");
if (__builtin_expect (p + s <= relro_end, 1))
{
/* The variable lies in the region protected by RELRO. */
__mprotect ((void *) p, s, PROT_READ|PROT_WRITE);
if (__mprotect ((void *) p, s, PROT_READ|PROT_WRITE) < 0)
{
errstring = N_("cannot change memory protections");
goto call_lose_errno;
}
__stack_prot |= PROT_READ|PROT_WRITE|PROT_EXEC;
__mprotect ((void *) p, s, PROT_READ);
}