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Message-ID: <da9e29c39fae03caa21b6fa915009b4f7f2ec0cf.camel@debian.org>
Date: Thu, 13 Dec 2018 21:02:12 +0100
From: Yves-Alexis Perez <corsac@...ian.org>
To: oss-security@...ts.openwall.com
Cc: Jann Horn <jannh@...gle.com>
Subject: Re: Linux kernel: userfaultfd bypasses tmpfs file
permissions (CVE-2018-18397; since 4.11; fixed in 4.14.87 and 4.19.7)
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On Wed, 2018-12-12 at 15:24 +0100, Solar Designer wrote:
> A question to ask may be: out of Linux kernel vulnerabilities being
> patched, are there more high and critical overall severity (e.g., as
> risk impact times risk probability) vulnerabilities found in "too
> recent" kernels than there are high and critical severity untracked
> vulnerabilities (also or instead) affecting "sufficiently old" kernels?
Data collected by Kees and regularly updated might help here. See
https://events.linuxfoundation.org/wp-content/uploads/2017/12/Overview-and-Recent-Developments-Kernel-Self-Protection-Project_Kees-Cook.pdf#%5B%7B%22num%22%3A22%2C%22gen%22%3A0%7D%2C%7B%22name%22%3A%22XYZ%22%7D%2C0%2C446.4%2C0%5D
for the last edition (sorry for the weird anchor, in case it breaks it's on
slide 5)
Regards,
- --
Yves-Alexis
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