CVE-2016-5195

Published: 19 October 2016

Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect handling of a copy-on-write (COW) feature to write to a read-only memory mapping, as exploited in the wild in October 2016, aka "Dirty COW."

From the Ubuntu security team

It was discovered that a race condition existed in the memory manager of the Linux kernel when handling copy-on-write breakage of private read-only memory mappings. A local attacker could use this to gain administrative privileges.

Priority

High

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-45.66)
Ubuntu 14.04 ESM (Trusty Tahr)
Released (3.13.0-100.147)
Ubuntu 12.04 ESM (Precise Pangolin)
Released (3.2.0-115.157)
Patches:
Introduced by 0a27a14a62921b438bb6f33772690d345a089be6
Fixed by 19be0eaffa3ac7d8eb6784ad9bdbc7d67ed8e619
linux-armadaxp
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was released [3.2.0-1677.104])
This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1001.10)
Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable
(4.4.0-1002.2)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-flo
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-gke
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.4.0-1003.3)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-goldfish
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-grouper
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-hwe-edge
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(4.8.0-36.36~16.04.1)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-linaro-omap
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-linaro-shared
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-lts-quantal
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
Patches:
DNE
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
linux-lts-saucy
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [end-of-life])
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin)
Released (3.13.0-100.147~precise1)
linux-lts-utopic
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
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])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was released [3.19.0-73.81~14.04.1])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
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])
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr)
Released (4.4.0-45.66~14.04.1)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-maguro
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-mako
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Ignored
(abandoned)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-manta
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist
(trusty was ignored)
Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-qcm-msm
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was ignored [abandoned])
linux-raspi2
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1029.36)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-snapdragon
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus)
Released (4.4.0-1032.36)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist

linux-ti-omap4
Launchpad, Ubuntu, Debian
Upstream
Released (4.9~rc2)
Ubuntu 16.04 LTS (Xenial Xerus) Does not exist

Ubuntu 14.04 ESM (Trusty Tahr) Does not exist

Ubuntu 12.04 ESM (Precise Pangolin) Does not exist
(precise was released [3.2.0-1493.120])