From: Eric Dumazet <edumazet@google.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
Eric Dumazet <eric.dumazet@gmail.com>,
Jann Horn <jannh@google.com>, syzbot <syzkaller@googlegroups.com>,
Andy Lutomirski <luto@kernel.org>,
"Chang S . Bae" <chang.seok.bae@intel.com>,
Andy Lutomirski <luto@amacapital.net>,
Borislav Petkov <bp@alien8.de>, Brian Gerst <brgerst@gmail.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Denys Vlasenko <dvlasenk@redhat.com>,
"H . Peter Anvin" <hpa@zytor.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Markus T Metzger <markus.t.metzger@intel.com>,
Peter Zijlstra <peterz@infradead.org>,
Ravi Shankar <ravi.v.shankar@intel.com>,
Rik van Riel <riel@surriel.com>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH] x86/fsgsbase/64: Fix NULL deref in 86_fsgsbase_read_task
Date: Sat, 15 Aug 2020 10:38:58 -0700 [thread overview]
Message-ID: <CANn89i+YhDW2HRPNvfuHSDtrqGgXstgzTgcOx=A40XwJwbhSmg@mail.gmail.com> (raw)
In-Reply-To: <20200815114825.GA2685004@gmail.com>
On Sat, Aug 15, 2020 at 4:48 AM Ingo Molnar <mingo@kernel.org> wrote:
>
>
> * Eric Dumazet <edumazet@google.com> wrote:
>
> > syzbot found its way in 86_fsgsbase_read_task() [1]
> >
> > Fix is to make sure ldt pointer is not NULL.
>
> Thanks for this fix. Linus has picked it up (inclusive the typos to
> the x86_fsgsbase_read_task() function name ;-), it's now upstream
> under:
>
> 8ab49526b53d: ("x86/fsgsbase/64: Fix NULL deref in 86_fsgsbase_read_task")
>
> By the fixes tag it looks like this should probably be backported all
> the way back to ~v4.20 or so?
This is absolutely right, sorry about the lack of a stable tag.
Most of my patches usually land into David Miller trees, where the
stable tag is not welcomed.
We use Fixes: tags to convey the exact information needed for stable backports.
Thanks.
prev parent reply other threads:[~2020-08-15 21:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-14 18:16 [PATCH] x86/fsgsbase/64: Fix NULL deref in 86_fsgsbase_read_task Eric Dumazet
2020-08-14 19:03 ` Andy Lutomirski
2020-08-14 19:12 ` Eric Dumazet
2020-08-14 19:37 ` Jann Horn
2020-08-15 11:48 ` Ingo Molnar
2020-08-15 17:38 ` Eric Dumazet [this message]
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