linux-kernel - Re: [PATCH] selinux: reject invalid ebitmaps

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Message-ID: <CAEjxPJ650OQ0VirNwhOiFnbNMR+w8kaxLF4wjY2QGLZ=1Ufgdg@mail.gmail.com>
Date:   Fri, 8 Sep 2023 15:04:42 -0400
From:   Stephen Smalley <stephen.smalley.work@...il.com>
To:     Christian Göttsche <cgzones@...glemail.com>
Cc:     selinux@...r.kernel.org, Paul Moore <paul@...l-moore.com>,
        Eric Paris <eparis@...isplace.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] selinux: reject invalid ebitmaps

On Fri, Aug 18, 2023 at 11:29 AM Christian Göttsche
<cgzones@...glemail.com> wrote:
>
> Reject ebitmaps with a node containing an empty map or with an incorrect
> highbit.  Both checks are already performed by userspace, the former
> since 2008 (patch 13cd4c896068 ("initial import from svn trunk revision
> 2950")), the latter since v2.7 in 2017 (patch 75b14a5de10a ("libsepol:
> ebitmap: reject loading bitmaps with incorrect high bit")).
>
> Signed-off-by: Christian Göttsche <cgzones@...glemail.com>

Reviewed-by: Stephen Smalley <stephen.smalley.work@...il.com>