From: Borislav Petkov <bp@alien8.de>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: tony.luck@intel.com, Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
the arch/x86 maintainers <x86@kernel.org>,
linux-edac@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
Subject: Re: stack out-of-bounds write in mce-inject.c
Date: Fri, 27 Apr 2018 17:41:15 +0200 [thread overview]
Message-ID: <20180427154115.GF15229@pd.tnic> (raw)
In-Reply-To: <CACT4Y+Ys9bKFNaBm7YuCvk04jcZ2SnLiDSxgCojZMwtb2PKVBg@mail.gmail.com>
On Fri, Apr 27, 2018 at 05:24:24PM +0200, Dmitry Vyukov wrote:
> Hi,
>
> Opening /sys/kernel/debug/mce-inject/flags overwrites stack:
>
> ==================================================================
> BUG: KASAN: stack-out-of-bounds in vsnprintf+0x1b23/0x1b40 lib/vsprintf.c:2365
> Write of size 1 at addr ffff8800627b7abb by task egrep/4309
How do you trigger this exactly?
You grep it for something apparently...
Thx.
--
Regards/Gruss,
Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
next prev parent reply other threads:[~2018-04-27 15:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-27 15:24 stack out-of-bounds write in mce-inject.c Dmitry Vyukov
2018-04-27 15:41 ` Borislav Petkov [this message]
2018-04-27 16:06 ` Dmitry Vyukov
2018-04-27 16:37 ` [PATCH] x86, mce: Fix stack out-of-bounds write in mce-inject.c:flags_read() Luck, Tony
2018-04-27 16:59 ` Borislav Petkov
2018-05-06 10:52 ` [tip:ras/core] x86/MCE: Fix stack out-of-bounds write in mce-inject.c: Flags_read() tip-bot for Luck, Tony
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