linux-kernel - Re: [External] Re: [PATCH] mm: memcontrol: Fix out-of-bounds on the buf returned by memory_stat

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Message-ID: <CAMZfGtXNg31+8QLbUMj7f61Yg1Jgt0rPB7VTDE7qoopGCANGjA@mail.gmail.com>
Date:   Mon, 14 Sep 2020 12:02:33 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Cgroups <cgroups@...r.kernel.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [External] Re: [PATCH] mm: memcontrol: Fix out-of-bounds on the
 buf returned by memory_stat_format

On Sun, Sep 13, 2020 at 8:42 AM Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> On Sat, 12 Sep 2020 23:51:00 +0800 Muchun Song <songmuchun@...edance.com> wrote:
>
> > The memory_stat_format() returns a format string, but the return buf
> > may not including the trailing '\0'. So the users may read the buf
> > out of bounds.
>
> That sounds serious.  Is a cc:stable appropriate?
>

Yeah, I think we should cc:stable.

-- 
Yours,
Muchun