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From: Solar Designer <solar@openwall.com>
To: kernel-hardening@lists.openwall.com
Subject: Re: [kernel-hardening] [PATCH] move RLIMIT_NPROC check from set_user() to do_execve_common()
Date: Sun, 24 Jul 2011 18:32:31 +0400	[thread overview]
Message-ID: <20110724143231.GA18453@openwall.com> (raw)
In-Reply-To: <20110721124830.GA1325@openwall.com>

Vasiliy,

On Thu, Jul 21, 2011 at 04:48:30PM +0400, Solar Designer wrote:
> Here's my current proposal:
> 
> 1. Apply Vasiliy's patch to move the RLIMIT_NPROC check from setuid() to
> execve(), optionally enhanced with setting PF_SETUSER_FAILED on
> would-be-failed setuid() and checking this flag in execve() (in addition
> to repeating the RLIMIT_NPROC check).
> 
> 2. With a separate patch, add a prctl() to read the PF_SETUSER_FAILED flag.
> Android will be able to use this if it wants to.

Can you please implement these two patches and post them to LKML?
(Include the PF_SETUSER_FAILED implementation in the first patch.)

Or do you have a different suggestion on how to proceed?

Thanks,

Alexander

  parent reply	other threads:[~2011-07-24 14:32 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-12 13:09 [kernel-hardening] RLIMIT_NPROC check in set_user() Vasiliy Kulikov
2011-07-06 17:36 ` [kernel-hardening] " Vasiliy Kulikov
2011-07-06 18:01   ` Linus Torvalds
2011-07-06 18:59     ` Vasiliy Kulikov
2011-07-07  7:56       ` Vasiliy Kulikov
2011-07-07  8:19         ` Vasiliy Kulikov
2011-07-12 13:27           ` [kernel-hardening] [PATCH] move RLIMIT_NPROC check from set_user() to do_execve_common() Vasiliy Kulikov
2011-07-12 21:16             ` [kernel-hardening] " Linus Torvalds
2011-07-12 23:14               ` NeilBrown
2011-07-13  6:31                 ` Solar Designer
2011-07-13  7:06                   ` NeilBrown
2011-07-13 20:46                     ` Linus Torvalds
2011-07-14  0:11                       ` James Morris
2011-07-14  1:27                         ` NeilBrown
2011-07-14 15:06                           ` Solar Designer
2011-07-15  3:30                             ` NeilBrown
2011-07-15  5:35                               ` Willy Tarreau
2011-07-15  6:31                               ` Vasiliy Kulikov
2011-07-15  7:06                                 ` NeilBrown
2011-07-15  7:38                                   ` Vasiliy Kulikov
2011-07-15 13:04                                     ` Solar Designer
2011-07-15 13:58                                     ` Stephen Smalley
2011-07-15 15:26                                       ` Vasiliy Kulikov
2011-07-15 19:54                                         ` Stephen Smalley
2011-07-21  4:09                                           ` NeilBrown
2011-07-21 12:48                                             ` Solar Designer
2011-07-21 18:21                                               ` Linus Torvalds
2011-07-21 19:39                                                 ` [kernel-hardening] " Solar Designer
2011-07-25 17:14                                                   ` Vasiliy Kulikov
2011-07-25 23:40                                                     ` Solar Designer
2011-07-26  0:47                                                       ` NeilBrown
2011-07-26  1:16                                                         ` Solar Designer
2011-07-26  4:11                                                           ` NeilBrown
2011-07-26 14:48                                                             ` [kernel-hardening] [patch v2] " Vasiliy Kulikov
2011-07-27  2:15                                                               ` [kernel-hardening] " NeilBrown
2011-07-29  7:07                                                                 ` Vasiliy Kulikov
2011-07-29  8:06                                                               ` Vasiliy Kulikov
2011-07-29  8:11                                                                 ` [kernel-hardening] [patch v3] " Vasiliy Kulikov
2011-07-29  8:17                                                                   ` [kernel-hardening] " James Morris
2011-07-24 14:32                                               ` Solar Designer [this message]
2011-07-24 18:02                                                 ` [kernel-hardening] [PATCH] " Vasiliy Kulikov
2011-07-14  1:30                         ` [kernel-hardening] " KOSAKI Motohiro
2011-07-13  5:36             ` KOSAKI Motohiro
2011-07-14 15:22             ` [kernel-hardening] " Solar Designer
2011-07-14 15:55               ` Vasiliy Kulikov
2011-07-11 16:59       ` [kernel-hardening] RLIMIT_NPROC check in set_user() Solar Designer
2011-07-11 18:56         ` Vasiliy Kulikov
2011-07-13  9:48           ` Solar Designer
2011-07-14 14:15             ` Solar Designer
2011-07-14 14:27               ` Vasiliy Kulikov
2011-07-14 15:14                 ` Solar Designer
2011-07-14 16:31                   ` [kernel-hardening] compile time warnings in libc for setuid() unused result (was: RLIMIT_NPROC check in set_user()) Vasiliy Kulikov

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