CVE-2018-19407

Published: 20 November 2018

The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized.

From the Ubuntu security team

Wei Wu discovered that the KVM implementation in the Linux kernel did not properly ensure that ioapics were initialized. A local attacker could use this to cause a denial of service (system crash).

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-44.47)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-142.168)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(3.11.0-12.19)
Patches:
Introduced by 5c919412fe61c35947816fdbd5f7bd09fe0dd073
Fixed by e97f852fd4561e77721bb9a4e0ea9d98305b1e93
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1032.34)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1075.85)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1038.41)
linux-aws-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1032.34~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1037.39)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1037.39~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.15.0-1037.39~14.04.2)
linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1037.39)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1037.39~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(was needs-triage ESM criteria)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-gcp
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1027.28)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1027.28~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-1006.7~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

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

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (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 (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (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 (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.18.0-14.15~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-45.48~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(5.0.0-8.9~18.04.1)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-45.48~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1029.29)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1040.46)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [out of standard support])
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-142.168~14.04.1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (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 (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored [abandoned])
linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

Ubuntu 16.04 LTS (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 (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1033.38)
Ubuntu 16.04 LTS (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 (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1008.10)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.15.0-1008.10~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1031.33)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1103.111)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.20~rc5)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1107.112)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist