linux-kernel - Re: [PATCH] kernel/sys.c: fix and improve control flow in __sys

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 15 Feb 2023 12:47:47 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Ondrej Mosnacek <omosnace@...hat.com>
Cc:     "Eric W. Biederman" <ebiederm@...ssion.com>,
        linux-security-module@...r.kernel.org, selinux@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] kernel/sys.c: fix and improve control flow in
 __sys_setres[ug]id()

On Wed, 15 Feb 2023 14:18:07 +0100 Ondrej Mosnacek <omosnace@...hat.com> wrote:

> 1. First determine if CAP_SET[UG]ID is required and only then call
>    ns_capable_setid(), to avoid bogus LSM (SELinux) denials.

Can we please have more details on the selinux failures?  Under what
circumstances?  What is the end-user impact?

Because a fix for "bogus LSM (SELinux) denials" sounds like something
which should be backported into earlier kernels, but there simply isn't
sufficient information here for others to decide on this.