linux-kernel - Re: [PATCH] fs/binfmt_elf.c: allocate initialized memory in fill_thread_core

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]

Message-ID: <20200527195303.GF23230@ZenIV.linux.org.uk>
Date:   Wed, 27 May 2020 20:53:03 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Borislav Petkov <bp@...en8.de>
Cc:     Alexander Potapenko <glider@...gle.com>,
        Kees Cook <keescook@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Alexey Dobriyan <adobriyan@...il.com>,
        LKML <linux-kernel@...r.kernel.org>, sunhaoyl@...look.com,
        x86@...nel.org
Subject: Re: [PATCH] fs/binfmt_elf.c: allocate initialized memory in
 fill_thread_core_info()

On Wed, May 27, 2020 at 09:04:56PM +0200, Borislav Petkov wrote:
> On Tue, May 26, 2020 at 11:38:17PM +0100, Al Viro wrote:
> > Folks, could you test the following?
> > 
> > copy_xstate_to_kernel(): don't leave parts of destination uninitialized
> > 
> > copy the corresponding pieces of init_fpstate into the gaps instead.
> > 
> > Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
> 
> Am I taking this through tip (would prefer to as there's other FPU stuff
> pending) or should I ack this so that you can send it upwards?

Either way would work - I was going to send it to Linus tonight and an
extra Acked-by: would be welcome.  OTOH, if you would rather have all
x86-related patches go through x86 git... your subtree, your rules.