From: Alexey Dobriyan <adobriyan@gmail.com>
To: Linus Torvalds <torvalds@linuxfoundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
gorcunov@openvz.org
Subject: auxv stuff (Re: [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack leak)
Date: Mon, 15 Mar 2021 09:00:00 +0300 [thread overview]
Message-ID: <YE734MgE40jTv9zJ@localhost.localdomain> (raw)
In-Reply-To: <CAHk-=wgMm=PG3uxfpmYpkX-GaDAR09pej=t3nD6hHDNCYCyaRQ@mail.gmail.com>
On Sun, Mar 14, 2021 at 02:40:05PM -0700, Linus Torvalds wrote:
> [mm->saved_auxv]
>
> That's a separate issue, and I can't find it in myself to care (and
> nobody has ever complained), but I thought I'd mention it.
There is another (non-security) one. Compat 32-bit process will report
2 longs too many:
00000000 20 00 00 00 40 85 f5 f7 21 00 00 00 00 80 f5 f7 | ...@...!.......|
00000010 10 00 00 00 ff fb 8b 0f 06 00 00 00 00 10 00 00 |................|
00000020 11 00 00 00 64 00 00 00 03 00 00 00 34 80 04 08 |....d.......4...|
00000030 04 00 00 00 20 00 00 00 05 00 00 00 08 00 00 00 |.... ...........|
00000040 07 00 00 00 00 90 f5 f7 08 00 00 00 00 00 00 00 |................|
00000050 09 00 00 00 25 83 04 08 0b 00 00 00 00 00 00 00 |....%...........|
00000060 0c 00 00 00 00 00 00 00 0d 00 00 00 00 00 00 00 |................|
00000070 0e 00 00 00 00 00 00 00 17 00 00 00 00 00 00 00 |................|
00000080 19 00 00 00 8b 27 99 ff 1a 00 00 00 02 00 00 00 |.....'..........|
00000090 1f 00 00 00 f0 2f 99 ff 0f 00 00 00 9b 27 99 ff |...../.......'..|
000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
AT_NULL AT_NULL ^^^^^^^^^^^^^^^^^^^^^^^
000000b0
next prev parent reply other threads:[~2021-03-15 6:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-14 20:51 [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack leak Alexey Dobriyan
2021-03-14 21:40 ` Linus Torvalds
2021-03-14 22:24 ` Cyrill Gorcunov
2021-03-15 6:00 ` Alexey Dobriyan [this message]
2021-03-15 6:42 ` auxv stuff (Re: [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack leak) Cyrill Gorcunov
2021-03-16 18:50 ` Alexey Dobriyan
2021-03-16 18:51 ` Cyrill Gorcunov
2021-03-14 22:18 ` [PATCH] prctl: fix PR_SET_MM_AUXV kernel stack leak Cyrill Gorcunov
2021-03-15 10:29 ` Dan Carpenter
2021-03-15 13:30 ` Alexey Dobriyan
2021-03-15 12:08 ` Oleg Nesterov
2021-03-15 12:54 ` Cyrill Gorcunov
2021-03-15 13:19 ` Oleg Nesterov
2021-03-15 13:52 ` Cyrill Gorcunov
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