CVE-2018-12904 (retired)

Priority
Description
In arch/x86/kvm/vmx.c in the Linux kernel before 4.17.2, when nested
virtualization is used, local attackers could cause L1 KVM guests to
VMEXIT, potentially allowing privilege escalations and denial of service
attacks due to lack of checking of CPL.
Ubuntu-Description
Felix Wilhelm discovered that the KVM implementation in the Linux kernel
did not properly perform permission checks in some situations when nested
virtualization is used. An attacker in a guest VM could possibly use this
to escape into an outer VM or the host OS.
Notes
 tyhicks> Ubuntu kernels do not enable nested KVM virtualization by default and
  are unaffected by this flaw in the default configuration. To ensure that
  nested virtualization is not enabled, verify that the
  /sys/module/kvm_intel/parameters/nested file contains "N".
Assigned-to
tyhicks
Package
Source: linux (LP Ubuntu Debian)
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-33.36)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-10.11)
Patches:
Introduced by 70f3aac964ae2bc9a0a1d5d65a62e258591ade18Fixed by 727ba748e110b4de50d142edca9d6a9b7e6111d8
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1020.20)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-1002.3)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1022.22~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1022.23)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-1003.3)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1022.23)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.18.0-1003.3~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-1018.19~16.04.2)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1018.19)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-1002.3)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-33.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):released (4.15.0-33.36~16.04.1)
Ubuntu 18.04 LTS (Bionic Beaver):not-affected (4.18.0-11.12~18.04.1)
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1020.20)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-1003.3)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):not-affected
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (abandoned)
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 19.04 (Disco Dingo):DNE
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):ignored (was needed now end-of-life)
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1017.20)
Ubuntu 19.04 (Disco Dingo):not-affected (4.15.0-1021.24)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):released (4.15.0-1021.23)
Ubuntu 19.04 (Disco Dingo):not-affected (4.18.0-1005.7)
Package
Upstream:released (4.18~rc1)
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 16.04 LTS (Xenial Xerus):not-affected
Ubuntu 18.04 LTS (Bionic Beaver):not-affected
Ubuntu 19.04 (Disco Dingo):DNE
More Information

Updated: 2019-08-23 09:29:28 UTC (commit 436fd4ed4cf0038ddd382cb8649607ace163dda7)