ALT Linux kernel packages development
 help / color / mirror / Atom feed
From: Vitaly Chikunov <vt@altlinux.org>
To: ALT Linux kernel packages development <devel-kernel@lists.altlinux.org>
Subject: Re: [d-kernel] [PATCH 1/1] kiosk: MIN_UID 500 -> 1000
Date: Tue, 25 Feb 2025 04:07:09 +0300
Message-ID: <20250225010709.bihwtn3bugripkc4@altlinux.org> (raw)
In-Reply-To: <fbcfa0a61c11e2a63328ed033ad54dc768f5a4d5.1740037202.git.mcpain@altlinux.org>

Oleg,

On Thu, Feb 20, 2025 at 10:58:58AM +0300, mcpain@altlinux.org wrote:
> From: Oleg Solovyov <mcpain@altlinux.org>
> 
> ---
>  security/kiosk/kiosk_lsm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/security/kiosk/kiosk_lsm.c b/security/kiosk/kiosk_lsm.c
> index 3cd4972086a4..18f810a1ce0f 100644
> --- a/security/kiosk/kiosk_lsm.c
> +++ b/security/kiosk/kiosk_lsm.c
> @@ -282,7 +282,7 @@ static int kiosk_bprm_check_security(struct linux_binprm *bprm)
>  	if (kiosk_mode == KIOSK_PERMISSIVE)
>  		return 0;
>  
> -	if (cur_uid >= 500) {
> +	if (cur_uid >= 1000) {

Раз этот параметр зависит от user space, то, возможно, стоило сделать
этот параметр управляемым из user space.

Пользователи могут экспериментировать с ядрами из других бранчей или
заданий, или майнтайнеры могут делать "карманы" с копией ядрам из Сизифа
собранного для конкретного бранча. В этом случае они могут не заметить,
что защита не работает.

Просто мысль, не предлагаю это реализовывать.


>  		bprm->secureexec = 1;
>  		if (bprm->executable != bprm->interpreter)
>  			return 0;
> -- 
> 2.42.4
> 
> _______________________________________________
> devel-kernel mailing list
> devel-kernel@lists.altlinux.org
> https://lists.altlinux.org/mailman/listinfo/devel-kernel


  parent reply	other threads:[~2025-02-25  1:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-20  7:58 [d-kernel] [PATCH 0/1] kiosk: change UID_MIN mcpain
2025-02-20  7:58 ` [d-kernel] [PATCH 1/1] kiosk: MIN_UID 500 -> 1000 mcpain
2025-02-21  9:32   ` Sergey V Turchin
2025-02-21 11:46     ` Ivan A. Melnikov
2025-02-21 13:11       ` Sergey V Turchin
2025-02-25  1:07   ` Vitaly Chikunov [this message]
2025-02-25 10:40     ` Oleg Solovyov
2025-02-21 18:11 ` [d-kernel] [PATCH 0/1] kiosk: change UID_MIN Vitaly Chikunov

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:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

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

  git send-email \
    --in-reply-to=20250225010709.bihwtn3bugripkc4@altlinux.org \
    --to=vt@altlinux.org \
    --cc=devel-kernel@lists.altlinux.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

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

ALT Linux kernel packages development

This inbox may be cloned and mirrored by anyone:

	git clone --mirror http://lore.altlinux.org/devel-kernel/0 devel-kernel/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 devel-kernel devel-kernel/ http://lore.altlinux.org/devel-kernel \
		devel-kernel@altlinux.org devel-kernel@altlinux.ru devel-kernel@altlinux.com
	public-inbox-index devel-kernel

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://lore.altlinux.org/org.altlinux.lists.devel-kernel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git