CVE-2019-3887 (retired)

Priority
Description
A flaw was found in the way KVM hypervisor handled x2APIC Machine Specific
Rregister (MSR) access with nested(=1) virtualization enabled. In that, L1
guest could access L0's APIC register values via L2 guest, when 'virtualize
x2APIC mode' is enabled. A guest could use this flaw to potentially crash
the host kernel resulting in DoS issue. Kernel versions from 4.16 and newer
are vulnerable to this issue.
Ubuntu-Description
Marc Orr discovered that the KVM hypervisor implementation in the Linux
kernel did not properly restrict APIC MSR register values when nested
virtualization is used. An attacker in a guest vm could use this to cause a
denial of service (host OS crash).
Notes
 tyhicks> Ubuntu kernels do not enable nested KVM virtualization by default and
  are unaffected by this flaw in the default configuration. However, installing
  QEMU results in nested KVM support to be enabled via the
  /etc/modprobe.d/qemu-system-x86.conf file. To ensure that nested
  virtualization is not enabled, verify that the
  /sys/module/kvm_intel/parameters/nested file contains "N".
 sbeattie> MITIGATION: if qemu is installed, to prevent nested
  virtualization from being enabled, set "options kvm_intel nested=0"
  in /etc/modprobe.d/qemu-system-x86.conf
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected (3.0.0-12.20)
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (3.11.0-12.19)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.2.0-16.19)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.13.0-16.19)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-20.21)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-15.16)
Ubuntu 19.10 (Eoan):released (5.0.0-15.16)
Patches:
Introduced by 15303ba5d1cd9b28d03a980456c0978c0ea3b208Fixed by acff78477b9b4f26ecdf65733a4ed77fe837e9dc
Introduced by c992384bde84fb2f0318bdb4f6c710605dd7a217Fixed by c73f4c998e1fd4249b9edfa39e23f4fda2b9b041
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.4.0-1002.2)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1001.10)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.15.0-1001.1)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-1016.18)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1006.6)
Ubuntu 19.10 (Eoan):released (5.0.0-1006.6)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.15.0-1030.31~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.15.0-1023.24~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.11.0-1009.9)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-1018.18~18.04.1)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-1018.18)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1006.6)
Ubuntu 19.10 (Eoan):released (5.0.0-1006.6)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.11.0-1009.9)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-1018.18~18.04.1)
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-9019.20)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.10.0-1004.4)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.15.0-1001.1)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-1011.12)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1006.6)
Ubuntu 19.10 (Eoan):released (5.0.0-1006.6)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-1011.12~18.04.1)
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.18.0-20.21~18.04.1)
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.8.0-36.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (5.0.0-15.16~18.04.1)
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1004.9)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.15.0-1002.2)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-1012.12)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1006.6)
Ubuntu 19.10 (Eoan):released (5.0.0-1006.6)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected (3.13.0-24.46~precise1)
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [end-of-life])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):not-affected (4.4.0-13.29~14.04.1)
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE (trusty was ignored [abandoned])
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Ubuntu 19.10 (Eoan):DNE
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needs-triage now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.15.0-1002.3)
Ubuntu 18.10 (Cosmic Cuttlefish):not-affected (4.15.0-1004.5)
Ubuntu 19.04 (Disco Dingo):not-affected (4.15.0-1021.24)
Ubuntu 19.10 (Eoan):not-affected (4.15.0-1035.40)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.15.0-1007.9~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.15.0-1007.9)
Ubuntu 18.10 (Cosmic Cuttlefish):not-affected (4.15.0-1007.9)
Ubuntu 19.04 (Disco Dingo):not-affected (4.15.0-1007.9)
Ubuntu 19.10 (Eoan):not-affected (4.15.0-1011.13)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.2.0-1013.19)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.13.0-1005.5)
Ubuntu 18.10 (Cosmic Cuttlefish):released (4.18.0-1014.16)
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1008.8)
Ubuntu 19.10 (Eoan):released (5.0.0-1008.8)
Package
Upstream:released (5.1~rc4)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected (4.4.0-1012.12)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.4.0-1077.82)
Ubuntu 18.10 (Cosmic Cuttlefish):DNE
Ubuntu 19.04 (Disco Dingo):released (5.0.0-1012.12)
Ubuntu 19.10 (Eoan):released (5.0.0-1012.12)
More Information

Updated: 2019-06-03 19:15:48 UTC (commit 44f4ed606c2da48046c30d7037221a6a8a7e0e4d)