CVE-2018-17182

Published: 19 September 2018

An issue was discovered in the Linux kernel through 4.18.8. The vmacache_flush_all function in mm/vmacache.c mishandles sequence number overflows. An attacker can trigger a use-after-free (and possibly gain privileges) via certain thread creation, map, unmap, invalidation, and dereference operations.

From the Ubuntu security team

Jann Horn discovered that the vmacache subsystem did not properly handle sequence number overflows, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-36.39)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-137.163)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable

Patches:
Introduced by 6b4ebc3a9078c5b7b8c4cf495a0b1d2d0e0bfe7a
Fixed by 7a9cdebdcc17e426fb5287e4a82db1dfe86339b2
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1023.23)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1069.79)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-1031.34)
linux-azure
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1025.26)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1025.26~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.15.0-1030.31~14.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-1004.4~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1025.26)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-euclid
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 (4.19~rc4)
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 (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1021.22)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-1021.22~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 (4.19~rc4)
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 (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-36.39~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable
(4.18.0-11.12~18.04.1)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.15.0-36.39~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1023.23)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1035.41)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 (4.19~rc4)
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 [out of standard support])
linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 [out of standard support])
linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 [out of standard support])
linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 (4.4.0-137.163~14.04.1)
linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
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 (4.19~rc4)
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 (4.19~rc4)
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 (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1021.24)
Ubuntu 16.04 ESM (Xenial Xerus) Ignored
(was needed now end-of-life)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (4.15.0-1024.26)
Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1098.106)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.19~rc4)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus)
Released (4.4.0-1102.107)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist