[<prev] [next>] [day] [month] [year] [list]
Message-ID: <nycvar.YSQ.7.76.1709261022090.10045@wniryva>
Date: Tue, 26 Sep 2017 10:26:27 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Jim Mattson <jmattson@...gle.com>
Subject: CVE-2017-12154 Kernel: kvm: nVMX: L2 guest could access hardware(L0)
CR8 register
Hello,
Linux kernel built with the KVM virtualisation support(CONFIG_KVM), with
nested virtualisation(nVMX) feature enabled(nested=1), is vulnerable to a
crash due to disabled external interrupts. As L2 guest could access(r/w)
hardware CR8 register of the host(L0).
In a nested virtualisation setup, L2 guest user could use this flaw to
potentially crash the host(L0) resulting in DoS.
Upstream patch
--------------
-> https://git.kernel.org/linus/51aa68e7d57e3217192d88ce90fd5b8ef29ec94f
This issue was reported by Jim Mattson of Google.com.
Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
Powered by blists - more mailing lists
Please check out the
Open Source Software Security Wiki, which is counterpart to this
mailing list.
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
