linux-kernel - Re: [PATCH RFC] mm: Add an fs-write seal to memfd

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:   Fri, 5 Oct 2018 12:53:39 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        jreck@...gle.com, john.stultz@...aro.org, tkjos@...gle.com,
        gregkh@...uxfoundation.org, Al Viro <viro@...iv.linux.org.uk>,
        "J. Bruce Fields" <bfields@...ldses.org>,
        Jeff Layton <jlayton@...nel.org>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        Mike Kravetz <mike.kravetz@...cle.com>
Subject: Re: [PATCH RFC] mm: Add an fs-write seal to memfd

On Fri,  5 Oct 2018 12:27:27 -0700 "Joel Fernandes (Google)" <joel@...lfernandes.org> wrote:

> To support the usecase, this patch adds a new F_SEAL_FS_WRITE seal which
> prevents any future mmap and write syscalls from succeeding while
> keeping the existing mmap active. The following program shows the seal
> working in action:

Please be prepared to create a manpage patch for this one.