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CVE-2018-16880

Published: 29 January 2019

A flaw was found in the Linux kernel's handle_rx() function in the [vhost_net] driver. A malicious virtual guest, under specific conditions, can trigger an out-of-bounds write in a kmalloc-8 slab on a virtual host which may lead to a kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out. Versions from v4.16 and newer are vulnerable.

From the Ubuntu security team

Jason Wang discovered that the vhost net driver in the Linux kernel contained an out of bounds write vulnerability. An attacker in a guest virtual machine could use this to cause a denial of service (host system crash) or possibly execute arbitrary code in the host kernel.

Priority

Medium

CVSS 3 base score: 7.0

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-16.19)
cosmic
Released (4.18.0-16.17)
precise Not vulnerable
(3.0.0-12.20)
trusty Not vulnerable
(3.11.0-12.19)
upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.2.0-16.19)
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
cosmic
Released (4.18.0-1011.13)
precise Does not exist

trusty Not vulnerable
(4.4.0-1002.2)
upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.4.0-1001.10)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-1013.13~18.04.1)
cosmic
Released (4.18.0-1013.13)
precise Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.11.0-1009.9)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-1013.13~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.11.0-1009.9)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.4.0-9019.20)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
cosmic
Released (4.18.0-1007.8)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-1007.8~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Ignored
(end-of-life)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Ignored
(end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
bionic
Released (4.18.0-16.17~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-8.9~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.8.0-36.36~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
cosmic
Released (4.18.0-1008.8)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.4.0-1004.9)
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Not vulnerable
(3.13.0-24.46~precise1)
trusty Does not exist

upstream
Released (5.0~rc5)
xenial Does not exist

linux-lts-utopic
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Not vulnerable
(4.4.0-13.29~14.04.1)
upstream
Released (5.0~rc5)
xenial Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-mako
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (5.0~rc5)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.3)
cosmic Not vulnerable
(4.15.0-1004.5)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Ignored
(was needs-triage now end-of-life)
linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
cosmic Not vulnerable

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.13.0-1005.5)
cosmic
Released (4.18.0-1010.12)
precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.2.0-1013.19)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (5.0~rc5)
xenial Not vulnerable
(4.4.0-1012.12)