CVE-2019-7222

Published: 21 March 2019

The KVM implementation in the Linux kernel through 4.20.5 has an Information Leak.

From the Ubuntu security team

Felix Wilhelm discovered that an information leak vulnerability existed in the KVM subsystem of the Linux kernel, when nested virtualization is used. A local attacker could use this to expose sensitive information (host system memory to a guest VM).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-47.50)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-145.171)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.13.0-168.218)
Patches:
Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Fixed by 353c0956a618a07ba4bbe7ad00ff29fe70e8412a
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1035.37)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1079.89)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1040.43)
linux-aws-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1035.37~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-1014.14~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1041.45)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.15.0-1041.45~14.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-1014.14~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1041.45)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(was needed ESM criteria)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1029.31)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1029.31~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-1008.9~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-17.18~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-47.50~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.0.0-15.16~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-47.50~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1031.31)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1043.49)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [end-of-life])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [end-of-life])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [end-of-life])
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-144.170~14.04.1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 ESM (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-oem
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1035.40)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(was needs-triage now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1010.12)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1010.12~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1033.35)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1106.114)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (5.0~rc6)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1053.57)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1110.115)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Notes

AuthorNote
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".

References

Bugs