CVE-2019-9213

Published: 05 March 2019

In the Linux kernel before 4.20.14, expand_downwards in mm/mmap.c lacks a check for the mmap minimum address, which makes it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task.

From the Ubuntu security team

Jann Horn discovered that the mmap implementation in the Linux kernel did not properly check for the mmap minimum address in some situations. A local attacker could use this to assist exploiting a kernel NULL pointer dereference vulnerability.

Priority

Medium

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (5.0)
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 8869477a49c3e99def1fcdadd6bbc407fea14b45
Fixed by 0a1d52994d440e21def1c2174932410b4f2a98a1
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (5.0)
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)
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)
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)
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)
Ubuntu 18.04 LTS (Bionic Beaver) Does not exist

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

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (5.0)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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)
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