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Re: Linux kernel: CVE-2017-2636: local privilege escalation flaw in n_hdlc


From: Alexander Popov <alex.popov () linux com>
Date: Thu, 30 Mar 2017 14:55:42 +0300

On 07.03.2017 20:45, Alexander Popov wrote:
This is an announcement of CVE-2017-2636, which is a race condition in
the n_hdlc Linux kernel driver (drivers/tty/n_hdlc.c). It can be exploited
to gain a local privilege escalation.

This driver provides HDLC serial line discipline and comes as a kernel module
in many Linux distributions, which have CONFIG_N_HDLC=m in the kernel config.

Hello,

I've published the write-up: https://a13xp0p0v.github.io/2017/03/24/CVE-2017-2636.html

--
Alexander


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