From: Oleg Nesterov <oleg@redhat.com>
To: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
David Long <dave.long@linaro.org>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/1] uprobes: Fix the memory out of bound overwrite in copy_insn()
Date: Thu, 7 Nov 2013 20:40:10 +0100 [thread overview]
Message-ID: <20131107194010.GA29154@redhat.com> (raw)
In-Reply-To: <20131107162736.GA31834@redhat.com>
On 11/07, Oleg Nesterov wrote:
>
> But when I looked at it now I realized that it is very wrong, and it
> is very easy to crash the kernel (fortunately only root can enable
> uprobes).
>
> So we need to fix it (and cleanup), I'll try to make the patch asap.
Just truncate the binary after uprobe was enabled, then mmap() the
truncated area. This crashes the kernel if nobody else mmaped this
area in between.
Oleg.
next prev parent reply other threads:[~2013-11-07 19:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-06 19:19 [GIT PULL] uprobes: preparations for arm port Oleg Nesterov
2013-11-07 5:36 ` Srikar Dronamraju
2013-11-07 7:48 ` Ingo Molnar
2013-11-07 7:51 ` Ingo Molnar
2013-11-07 14:34 ` Oleg Nesterov
2013-11-07 15:16 ` Ingo Molnar
2013-11-07 16:27 ` Oleg Nesterov
2013-11-07 19:40 ` Oleg Nesterov [this message]
2013-11-07 19:40 ` [PATCH 1/1] uprobes: Fix the memory out of bound overwrite in copy_insn() Oleg Nesterov
2013-11-08 16:24 ` Oleg Nesterov
2013-11-13 10:38 ` Srikar Dronamraju
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