archive mirror
 help / color / mirror / Atom feed
From: hypervis0r <>
Subject: Re: [PATCH] fs/exec: require argv[0] presence in do_execveat_common()
Date: Tue, 1 Feb 2022 12:54:08 -0800	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

> I'm not really opposed  to attempting to change this with consensus
> (like, actually  proposing it on the Austin Group tracker), but a less
> invasive change would be  just enforcing it for the case where exec is
> a privilege boundary  (suid/sgid/caps). There's really no motivation
> for changing  longstanding standard behavior in a
> non-privilege-boundary  case.

I don't really see it as a matter of "maintaining standard behavior".

there are very little uses for this ABI feature to be present and only 
serves to make applications harder to port between Linux and other *nix 
systems. The pros (major vulnerabilities like CVE-2021-4034) outweigh 
the cons (minor userland ABI change that only affects shellcode on in this particular scenario, and I am all for this patch.

  parent reply	other threads:[~2022-02-01 20:54 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-26  4:39 Ariadne Conill
2022-01-26  6:42 ` Kees Cook
2022-01-26  7:28   ` Kees Cook
2022-01-26 11:18     ` Ariadne Conill
2022-01-26 12:33       ` Heikki Kallasjoki
2022-01-26 23:57         ` Kees Cook
2022-01-27  0:20           ` Eric W. Biederman
2022-01-26 16:59     ` David Laight
2022-01-26 13:27 ` Rich Felker
2022-01-26 14:46   ` Christian Brauner
2022-01-26 17:37   ` Ariadne Conill
2022-02-01 20:54   ` hypervis0r [this message]
2022-01-26 15:02 Alexey Dobriyan
2022-01-27  0:00 ` Kees Cook

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \ \ \ \ \ \ \ \
    --subject='Re: [PATCH] fs/exec: require argv[0] presence in do_execveat_common()' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).