oss-security - Re: CVE Request: Linux kernel execution in the early microcode loader.

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Message-Id: <20150320232637.896A66C0019@smtpvmsrv1.mitre.org>
Date: Fri, 20 Mar 2015 19:26:37 -0400 (EDT)
From: cve-assign@...re.org
To: quentin.casasnovas@...cle.com
Cc: cve-assign@...re.org, oss-security@...ts.openwall.com
Subject: Re: CVE Request: Linux kernel execution in the early microcode loader.

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> The Linux kernel Intel early microcode loader was vulnerable to a stack
> overflow.

> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=f84598bd7c851f8b0bf8cd0d7c3be0d73c432ff4

Our understanding of the discussion is, very roughly:

  - given the design goals of this part of the Linux kernel, it is
    reasonable for someone (who has a realistic use case for the Linux
    kernel code) to assert that this stack overflow crosses privilege
    boundaries within their environment

  - there are probably many other environments in which a person may
    guess that this stack overflow crosses privilege boundaries, but
    it actually doesn't

We think that's enough to have a CVE. Use CVE-2015-2666.

- -- 
CVE assignment team, MITRE CVE Numbering Authority
M/S M300
202 Burlington Road, Bedford, MA 01730 USA
[ PGP key available through http://cve.mitre.org/cve/request_id.html ]
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