2019-05-19 13:08:20 +01:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2012-02-10 10:51:24 -08:00
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2017-02-02 17:54:15 +01:00
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2016-11-04 15:23:12 +00:00
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2017-07-05 16:25:03 +01:00
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2020-06-20 09:16:44 +02:00
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2005-04-16 15:20:36 -07:00
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2013-05-22 13:44:05 -04:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 10:40:40 -04:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2019-04-10 15:08:13 -04:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 11:12:16 -04:00
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2005-04-16 15:20:36 -07:00
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2006-06-23 02:02:58 -07:00
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2017-07-05 16:25:03 +01:00
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2016-11-04 15:23:12 +00:00
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2017-03-28 20:16:46 +02:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2019-04-10 15:08:13 -04:00
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2005-04-16 15:20:36 -07:00
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2017-07-05 16:25:03 +01:00
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2005-04-16 15:20:36 -07:00
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2006-12-06 20:33:20 -08:00
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2005-04-16 15:20:36 -07:00
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2006-03-28 01:56:42 -08:00
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2005-04-16 15:20:36 -07:00
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2016-05-10 14:24:57 -04:00
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2008-08-24 07:24:41 -04:00
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2005-04-16 15:20:36 -07:00
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2007-02-12 00:55:38 -08:00
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2005-04-16 15:20:36 -07:00
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2006-06-28 04:26:44 -07:00
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2022-04-29 10:40:40 -04:00
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2005-04-16 15:20:36 -07:00
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2015-11-13 06:57:13 -05:00
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2022-04-29 11:12:16 -04:00
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2005-04-16 15:20:36 -07:00
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2016-11-04 15:23:12 +00:00
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2023-10-23 21:07:59 +03:00
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2016-11-04 15:23:12 +00:00
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2017-03-28 20:16:46 +02:00
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2016-11-04 15:23:12 +00:00
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2016-11-10 11:25:36 +00:00
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2022-04-29 10:40:40 -04:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 11:12:16 -04:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 10:40:40 -04:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2016-07-31 21:34:30 +01:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2012-06-10 17:13:09 -04:00
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2005-04-16 15:20:36 -07:00
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2016-05-23 16:22:40 -07:00
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2005-04-16 15:20:36 -07:00
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2016-05-10 14:24:06 -04:00
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2005-04-16 15:20:36 -07:00
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2014-10-21 20:11:25 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2016-07-01 01:07:30 +01:00
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2005-04-16 15:20:36 -07:00
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2014-10-21 20:11:25 -04:00
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2018-04-30 19:02:02 -04:00
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2005-04-16 15:20:36 -07:00
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2016-07-03 16:29:44 +01:00
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2018-04-30 19:02:02 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2018-04-30 19:02:02 -04:00
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2005-04-16 15:20:36 -07:00
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2013-05-22 13:44:05 -04:00
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2005-04-16 15:20:36 -07:00
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2013-05-22 13:44:05 -04:00
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2005-04-16 15:20:36 -07:00
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2016-05-10 14:24:06 -04:00
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2005-04-16 15:20:36 -07:00
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2014-10-21 20:11:25 -04:00
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2005-04-16 15:20:36 -07:00
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2016-07-01 01:07:32 +01:00
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2005-04-16 15:20:36 -07:00
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2016-07-01 01:07:32 +01:00
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2014-04-03 14:50:23 -07:00
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2016-07-01 01:07:32 +01:00
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2005-04-16 15:20:36 -07:00
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2016-07-01 01:07:32 +01:00
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2013-05-22 13:44:05 -04:00
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2016-07-01 01:07:32 +01:00
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2013-05-22 13:44:05 -04:00
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2016-07-01 01:07:32 +01:00
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2005-04-16 15:20:36 -07:00
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2015-02-17 13:45:23 -08:00
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2022-03-22 14:41:03 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2019-04-10 15:08:13 -04:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2008-07-25 19:45:34 -07:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2007-05-16 22:10:57 -07:00
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2005-04-16 15:20:36 -07:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2016-05-23 16:22:43 -07:00
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2016-05-23 16:22:46 -07:00
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2015-04-16 12:46:20 -07:00
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2016-05-23 16:22:49 -07:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2008-02-07 00:15:31 -08:00
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2014-01-15 19:58:28 +02:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2016-07-23 22:36:42 +10:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2012-02-10 10:51:24 -08:00
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2005-04-16 15:20:36 -07:00
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2012-02-10 10:51:24 -08:00
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2005-04-16 15:20:36 -07:00
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2011-10-28 14:13:29 +02:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2023-10-04 14:52:06 -04:00
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2005-04-16 15:20:36 -07:00
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2023-05-09 01:41:36 +00:00
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2014-06-06 14:36:15 -07:00
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2005-04-16 15:20:36 -07:00
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2011-01-12 17:00:26 -08:00
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2005-04-16 15:20:36 -07:00
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2005-11-07 00:59:44 -08:00
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2005-04-16 15:20:36 -07:00
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2015-05-02 10:06:54 -04:00
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2015-11-13 06:57:13 -05:00
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2015-11-17 01:07:57 -05:00
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2015-11-13 06:57:13 -05:00
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2015-05-02 10:06:54 -04:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2008-02-07 00:15:31 -08:00
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2014-04-03 14:50:23 -07:00
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2016-07-31 21:34:31 +01:00
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2005-04-16 15:20:36 -07:00
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2007-07-20 10:11:58 +09:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:22 -07:00
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2005-04-16 15:20:36 -07:00
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befs: Define usercopy region in befs_inode_cache slab cache
befs symlink pathnames, stored in struct befs_inode_info.i_data.symlink
and therefore contained in the befs_inode_cache slab cache, need to be
copied to/from userspace.
cache object allocation:
fs/befs/linuxvfs.c:
befs_alloc_inode(...):
...
bi = kmem_cache_alloc(befs_inode_cachep, GFP_KERNEL);
...
return &bi->vfs_inode;
befs_iget(...):
...
strlcpy(befs_ino->i_data.symlink, raw_inode->data.symlink,
BEFS_SYMLINK_LEN);
...
inode->i_link = befs_ino->i_data.symlink;
example usage trace:
readlink_copy+0x43/0x70
vfs_readlink+0x62/0x110
SyS_readlinkat+0x100/0x130
fs/namei.c:
readlink_copy(..., link):
...
copy_to_user(..., link, len);
(inlined in vfs_readlink)
generic_readlink(dentry, ...):
struct inode *inode = d_inode(dentry);
const char *link = inode->i_link;
...
readlink_copy(..., link);
In support of usercopy hardening, this patch defines a region in the
befs_inode_cache slab cache in which userspace copy operations are
allowed.
This region is known as the slab cache's usercopy region. Slab caches
can now check that each dynamically sized copy operation involving
cache-managed memory falls entirely within the slab's usercopy region.
This patch is modified from Brad Spengler/PaX Team's PAX_USERCOPY
whitelisting code in the last public patch of grsecurity/PaX based on my
understanding of the code. Changes or omissions from the original code are
mine and don't reflect the original grsecurity/PaX code.
Signed-off-by: David Windsor <dave@nullcore.net>
[kees: adjust commit log, provide usage trace]
Cc: Luis de Bethencourt <luisbg@kernel.org>
Cc: Salah Triki <salah.triki@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Luis de Bethencourt <luisbg@kernel.org>
2017-06-10 22:50:32 -04:00
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2024-03-12 20:32:19 -07:00
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|
befs: Define usercopy region in befs_inode_cache slab cache
befs symlink pathnames, stored in struct befs_inode_info.i_data.symlink
and therefore contained in the befs_inode_cache slab cache, need to be
copied to/from userspace.
cache object allocation:
fs/befs/linuxvfs.c:
befs_alloc_inode(...):
...
bi = kmem_cache_alloc(befs_inode_cachep, GFP_KERNEL);
...
return &bi->vfs_inode;
befs_iget(...):
...
strlcpy(befs_ino->i_data.symlink, raw_inode->data.symlink,
BEFS_SYMLINK_LEN);
...
inode->i_link = befs_ino->i_data.symlink;
example usage trace:
readlink_copy+0x43/0x70
vfs_readlink+0x62/0x110
SyS_readlinkat+0x100/0x130
fs/namei.c:
readlink_copy(..., link):
...
copy_to_user(..., link, len);
(inlined in vfs_readlink)
generic_readlink(dentry, ...):
struct inode *inode = d_inode(dentry);
const char *link = inode->i_link;
...
readlink_copy(..., link);
In support of usercopy hardening, this patch defines a region in the
befs_inode_cache slab cache in which userspace copy operations are
allowed.
This region is known as the slab cache's usercopy region. Slab caches
can now check that each dynamically sized copy operation involving
cache-managed memory falls entirely within the slab's usercopy region.
This patch is modified from Brad Spengler/PaX Team's PAX_USERCOPY
whitelisting code in the last public patch of grsecurity/PaX based on my
understanding of the code. Changes or omissions from the original code are
mine and don't reflect the original grsecurity/PaX code.
Signed-off-by: David Windsor <dave@nullcore.net>
[kees: adjust commit log, provide usage trace]
Cc: Luis de Bethencourt <luisbg@kernel.org>
Cc: Salah Triki <salah.triki@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Luis de Bethencourt <luisbg@kernel.org>
2017-06-10 22:50:32 -04:00
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2016-07-23 22:36:41 +10:00
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2005-04-16 15:20:36 -07:00
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2016-07-23 22:36:41 +10:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2012-09-26 11:33:07 +10:00
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2006-09-27 01:49:40 -07:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 11:12:16 -04:00
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2005-04-16 15:20:36 -07:00
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2022-04-29 11:12:16 -04:00
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2015-11-13 06:57:13 -05:00
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2013-09-16 10:35:31 -04:00
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2022-04-29 11:12:16 -04:00
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2024-05-30 21:20:53 +01:00
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2005-04-16 15:20:36 -07:00
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2015-11-13 06:57:13 -05:00
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2013-09-16 10:35:31 -04:00
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2015-11-13 06:57:13 -05:00
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2005-04-16 15:20:36 -07:00
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2015-05-02 13:32:22 -04:00
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2015-11-13 06:57:13 -05:00
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2015-05-02 13:32:22 -04:00
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2024-05-30 21:20:53 +01:00
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2015-11-13 06:57:13 -05:00
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2024-05-30 21:20:53 +01:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:48:47 +01:00
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2016-11-10 11:25:36 +00:00
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2016-08-14 17:48:47 +01:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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|
[PATCH] Fix BeFS slab corruption
In bugzilla #6941, Jens Kilian reported:
"The function befs_utf2nls (in fs/befs/linuxvfs.c) writes a 0 byte past the
end of a block of memory allocated via kmalloc(), leading to memory
corruption. This happens only for filenames which are pure ASCII and a
multiple of 4 bytes in length. [...]
Without DEBUG_SLAB, this leads to further corruption and hard lockups; I
believe this is the bug which has made kernels later than 2.6.8 unusable
for me. (This must be due to changes in memory management, the bug has
been in the BeFS driver since the time it was introduced (AFAICT).)
Steps to reproduce:
Create a directory (in BeOS, naturally :-) with files named, e.g.,
"1", "22", "333", "4444", ... Mount it in Linux and do an "ls" or "find""
This patch implements the suggested fix. Credits to Jens Kilian for
debugging the problem and finding the right fix.
Signed-off-by: Diego Calleja <diegocg@gmail.com>
Cc: Jens Kilian <jjk@acm.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-05 12:14:55 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-06-06 14:36:17 -07:00
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2016-11-10 11:25:36 +00:00
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|
2014-06-06 14:36:17 -07:00
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|
2005-04-16 15:20:36 -07:00
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|
2016-11-10 11:25:36 +00:00
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|
2014-06-06 14:36:17 -07:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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|
2014-06-06 14:36:17 -07:00
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2005-04-16 15:20:36 -07:00
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2014-06-06 14:36:17 -07:00
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2016-11-10 11:25:36 +00:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:48:47 +01:00
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|
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|
|
|
|
|
2016-08-14 17:59:11 +01:00
|
|
|
|
|
|
|
|
|
[PATCH] Fix BeFS slab corruption
In bugzilla #6941, Jens Kilian reported:
"The function befs_utf2nls (in fs/befs/linuxvfs.c) writes a 0 byte past the
end of a block of memory allocated via kmalloc(), leading to memory
corruption. This happens only for filenames which are pure ASCII and a
multiple of 4 bytes in length. [...]
Without DEBUG_SLAB, this leads to further corruption and hard lockups; I
believe this is the bug which has made kernels later than 2.6.8 unusable
for me. (This must be due to changes in memory management, the bug has
been in the BeFS driver since the time it was introduced (AFAICT).)
Steps to reproduce:
Create a directory (in BeOS, naturally :-) with files named, e.g.,
"1", "22", "333", "4444", ... Mount it in Linux and do an "ls" or "find""
This patch implements the suggested fix. Credits to Jens Kilian for
debugging the problem and finding the right fix.
Signed-off-by: Diego Calleja <diegocg@gmail.com>
Cc: Jens Kilian <jjk@acm.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-08-05 12:14:55 -07:00
|
|
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|
2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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2009-04-30 10:08:18 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2016-08-14 17:48:47 +01:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2016-11-04 15:23:12 +00:00
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2017-03-28 20:16:46 +02:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2017-07-05 16:25:03 +01:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2011-03-30 22:57:33 -03:00
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2005-04-16 15:20:36 -07:00
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2005-11-07 01:01:34 -08:00
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2009-08-16 21:05:08 +00:00
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2005-11-07 01:01:34 -08:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2015-04-16 12:46:20 -07:00
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2005-04-16 15:20:36 -07:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2016-07-23 22:36:42 +10:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:21 -07:00
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2016-07-23 22:36:41 +10:00
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2006-06-30 18:23:04 +02:00
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2016-07-23 22:36:41 +10:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2017-07-17 08:45:34 +01:00
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2005-04-16 15:20:36 -07:00
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2017-11-27 13:05:09 -08:00
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2005-04-16 15:20:36 -07:00
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2016-09-14 14:32:52 +02:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2016-07-23 22:36:42 +10:00
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2016-06-29 21:27:40 +01:00
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2016-07-23 22:36:42 +10:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2016-07-23 22:36:41 +10:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2008-10-15 22:04:03 -07:00
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2005-04-16 15:20:36 -07:00
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2014-08-08 14:20:31 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2016-07-23 22:36:41 +10:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2009-09-21 17:01:09 -07:00
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2016-11-04 15:23:12 +00:00
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2019-07-30 08:22:29 -07:00
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2008-02-07 00:15:31 -08:00
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2012-01-08 22:15:13 -05:00
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2005-04-16 15:20:36 -07:00
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2016-07-23 22:36:41 +10:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2010-01-28 22:11:38 -05:00
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2005-04-16 15:20:36 -07:00
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2016-07-23 22:36:41 +10:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2008-02-07 00:15:31 -08:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2006-06-23 02:02:58 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-23 02:02:58 -07:00
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2009-04-02 16:59:32 -07:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2020-09-18 16:45:50 -04:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2016-11-10 11:25:36 +00:00
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2024-09-16 13:26:20 -04:00
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2005-04-16 15:20:36 -07:00
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2013-03-02 19:39:14 -08:00
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2005-04-16 15:20:36 -07:00
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2014-04-03 14:50:23 -07:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2006-06-30 18:23:04 +02:00
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2005-04-16 15:20:36 -07:00
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2016-08-14 17:59:11 +01:00
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2005-04-16 15:20:36 -07:00
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