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CVE-2018-13100

Published: 3 July 2018

An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.17.3, which does not properly validate secs_per_zone in a corrupted f2fs image, as demonstrated by a divide-by-zero error.

From the Ubuntu Security Team

Wen Xu discovered that the f2fs file system implementation in the Linux kernel did not properly validate metadata. An attacker could use this to construct a malicious f2fs image that, when mounted, could cause a denial of service (system crash).

Notes

AuthorNote
sbeattie
possibly also 0cfe75c5b011994651a4ca6d74f20aa997bfc69a
fix subject 'f2fs: fix to do sanity check with secs_per_zone'
tyhicks
The affected user base for this issue is likely small since f2fs is
not the default filesystem and it is not widely used in Ubuntu
Priority

Low

CVSS 3 base score: 5.5

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-58.64)
cosmic Not vulnerable
(4.18.0-9.10)
disco Not vulnerable
(4.18.0-10.11)
precise Ignored
(was needed ESM criteria)
trusty Ignored
(was needed ESM criteria)
upstream
Released (4.19~rc1)
xenial
Released (4.4.0-145.171)
Patches:
Introduced by

aff063e266cbf4754021d8e5d16ee418560906fd

Fixed by 42bf546c1fe3f3654bdf914e977acbc2b80a5be5
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1047.49)
cosmic Not vulnerable
(4.18.0-1002.3)
disco Not vulnerable
(4.18.0-1002.3)
precise Does not exist

trusty
Released (4.4.0-1040.43)
upstream
Released (4.19~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 (4.19~rc1)
xenial
Released (4.15.0-1047.49~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.18.0-1011.11~18.04.1)
cosmic Not vulnerable
(4.18.0-1003.3)
disco Not vulnerable
(4.18.0-1003.3)
precise Does not exist

trusty Ignored
(was needed ESM criteria)
upstream
Released (4.19~rc1)
xenial
Released (4.15.0-1055.60)
linux-azure-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.18.0-1011.11~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.15.0-1055.60)
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 (4.19~rc1)
xenial Ignored
(was needed 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 (4.19~rc1)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1040.42)
cosmic Not vulnerable
(4.18.0-1002.3)
disco Not vulnerable
(4.18.0-1002.3)
precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.15.0-1040.42~16.04.1)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1040.42)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

linux-gke
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 (4.19~rc1)
xenial Ignored
(end-of-life)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1040.42)
disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

linux-gke-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1011.11~18.04.1)
disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Does not exist

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 (4.19~rc1)
xenial Ignored
(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 (4.19~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 (4.19~rc1)
xenial
Released (4.15.0-58.64~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(5.0.0-15.16~18.04.1)
cosmic Does not exist

disco Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.15.0-58.64~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1042.42)
cosmic Not vulnerable
(4.18.0-1003.3)
disco Not vulnerable
(4.18.0-1003.3)
precise Does not exist

trusty Does not exist

upstream
Released (4.19~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 (4.19~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 (4.19~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 (4.19~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 (4.19~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 (4.19~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 (4.19~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 (4.19~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 (4.19~rc1)
xenial Does not exist

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

bionic
Released (4.15.0-1050.57)
cosmic Ignored
(reached end-of-life)
disco
Released (4.15.0-1050.57)
precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial Ignored
(was needed now end-of-life)
linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1021.23)
cosmic Ignored
(reached end-of-life)
disco
Released (5.0.0-1004.8)
precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.15.0-1021.23~16.04.1)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-1043.46)
cosmic Not vulnerable
(4.18.0-1005.7)
disco Not vulnerable
(4.18.0-1005.7)
precise Does not exist

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.4.0-1106.114)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-1060.66)
cosmic Does not exist

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

trusty Does not exist

upstream
Released (4.19~rc1)
xenial
Released (4.4.0-1110.115)