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CVE-2017-18249

Published: 26 March 2018

The add_free_nid function in fs/f2fs/node.c in the Linux kernel before 4.12 does not properly track an allocated nid, which allows local users to cause a denial of service (race condition) or possibly have unspecified other impact via concurrent threads.

From the Ubuntu Security Team

It was discovered that a race condition existed in the f2fs file system implementation in the Linux kernel. A local attacker could use this to cause a denial of service.

Priority

Low

CVSS 3 base score: 7.0

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.12.0-11.12)
bionic Not vulnerable
(4.13.0-16.19)
cosmic Not vulnerable
(4.15.0-20.21)
disco Not vulnerable
(4.18.0-10.11)
precise Ignored
(was needs-triage ESM criteria)
trusty Ignored
(was needed ESM criteria)
upstream
Released (4.12~rc1)
xenial
Released (4.4.0-145.171)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 30a61ddf8117c26ac5b295e1233eaa9629a94ca3
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1001.1)
cosmic Not vulnerable
(4.15.0-1007.7)
disco Not vulnerable
(4.18.0-1002.3)
precise Does not exist

trusty
Released (4.4.0-1040.43)
upstream
Released (4.12~rc1)
xenial
Released (4.4.0-1079.89)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
cosmic Not vulnerable
(4.15.0-1009.9)
disco Not vulnerable
(4.18.0-1003.3)
precise Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.12~rc1)
xenial
Released (4.13.0-1005.7)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.13.0-1005.7)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Ignored
(was needs-triage ESM criteria)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1001.1)
cosmic Not vulnerable
(4.15.0-1006.6)
disco Not vulnerable
(4.18.0-1002.3)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.13.0-1002.5)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1004.5~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Not vulnerable

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Ignored
(was needed now end-of-life)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Ignored
(was needed now end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Does not exist

linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-13.14~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.13.0-26.29~16.04.2)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(5.0.0-14.15~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.13.0-26.29~16.04.2)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
cosmic Not vulnerable
(4.15.0-1008.8)
disco Not vulnerable
(4.18.0-1003.3)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.4.0-1043.49)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Ignored
(was needed ESM criteria)
trusty Does not exist

upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [end-of-life])
upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty
Released (4.4.0-144.170~14.04.1)
upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.12~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.3)
cosmic Not vulnerable
(4.15.0-1004.5)
disco Not vulnerable
(4.15.0-1021.24)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Not vulnerable
(4.13.0-1008.9)
linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
cosmic Not vulnerable
(4.15.0-1007.9)
disco Not vulnerable
(4.15.0-1007.9)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.13.0-1004.4)
bionic Not vulnerable
(4.13.0-1005.5)
cosmic Not vulnerable
(4.15.0-1010.11)
disco Not vulnerable
(4.18.0-1005.7)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.4.0-1106.114)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-1053.57)
cosmic Does not exist

disco Not vulnerable
(5.0.0-1010.10)
precise Does not exist

trusty Does not exist

upstream
Released (4.12~rc1)
xenial
Released (4.4.0-1110.115)