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CVE-2018-13095

Published: 3 July 2018

An issue was discovered in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.17.3. A denial of service (memory corruption and BUG) can occur for a corrupted xfs image upon encountering an inode that is in extent format, but has more extents than fit in the inode fork.

From the Ubuntu Security Team

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

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
linux-hwe-5.8
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

bionic Does not exist

groovy Does not exist

hirsute Does not exist

focal Not vulnerable
(5.8.0-23.24~20.04.1)
upstream
Released (4.18~rc3)
linux-gke-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1025.25~18.04.1)
upstream
Released (4.18~rc3)
linux-gkeop-5.4
Launchpad, Ubuntu, Debian
trusty Does not exist

xenial Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

bionic Not vulnerable
(5.4.0-1001.1)
upstream
Released (4.18~rc3)
linux
Launchpad, Ubuntu, Debian
hirsute Not vulnerable
(5.8.0-36.40+21.04.1)
bionic
Released (4.15.0-141.145)
xenial
Released (4.4.0-207.239)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.18.0-7.8)
disco Not vulnerable
(4.18.0-10.11)
eoan Not vulnerable
(5.0.0-13.14)
focal Not vulnerable
(5.4.0-9.12)
groovy Not vulnerable
(5.4.0-26.30)
trusty Ignored
(was needed ESM criteria)
upstream
Released (4.18~rc3)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 23fcb3340d033d9f081e21e6c12c2db7eaa541d3
linux-dell300x
Launchpad, Ubuntu, Debian
upstream
Released (4.18~rc3)
bionic
Released (4.15.0-1016.20)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-gkeop
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.4.0-1008.9)
upstream
Released (4.18~rc3)
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-oem-5.10
Launchpad, Ubuntu, Debian
focal Not vulnerable
(5.10.0-1008.9)
upstream
Released (4.18~rc3)
bionic Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-hwe-5.4
Launchpad, Ubuntu, Debian
upstream
Released (4.18~rc3)
bionic Not vulnerable
(5.4.0-37.41~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-raspi-5.4
Launchpad, Ubuntu, Debian
upstream
Released (4.18~rc3)
bionic Not vulnerable
(5.4.0-1013.13~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-azure-5.4
Launchpad, Ubuntu, Debian
upstream
Released (4.18~rc3)
bionic Not vulnerable
(5.4.0-1020.20~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

xenial Does not exist

linux-aws
Launchpad, Ubuntu, Debian
xenial
Released (4.4.0-1126.140)
artful Does not exist

bionic
Released (4.15.0-1098.105)
cosmic Not vulnerable
(4.18.0-1002.3)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1018.20+21.04.1)
trusty
Released (4.4.0-1090.94)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (4.18~rc3)
linux-azure
Launchpad, Ubuntu, Debian
trusty
Released (4.15.0-1112.124~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (4.15.0-1112.124~16.04.1)
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)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1006.6)
groovy Not vulnerable
(5.4.0-1010.10)
hirsute Not vulnerable
(5.8.0-1016.17+21.04.1)
upstream
Released (4.18~rc3)
linux-azure-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1112.125)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-gcp
Launchpad, Ubuntu, Debian
xenial
Released (4.15.0-1097.110~16.04.1)
artful Does not exist

bionic
Released (5.0.0-1020.20~18.04.1)
cosmic Not vulnerable
(4.18.0-1002.3)
disco Not vulnerable
(4.18.0-1002.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1015.15+21.04.1)
trusty Does not exist

upstream
Released (4.18~rc3)
linux-gcp-4.15
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1097.110)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1089.91)
xenial
Released (4.4.0-1091.100)
artful Does not exist

cosmic Not vulnerable
(4.18.0-1002.2)
disco Not vulnerable
(4.18.0-1003.3)
eoan Not vulnerable
(5.0.0-1004.4)
focal Not vulnerable
(5.4.0-1004.4)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1010.11+21.04.1)
trusty Does not exist

upstream
Released (4.18~rc3)
linux-lts-xenial
Launchpad, Ubuntu, Debian
trusty
Released (4.4.0-208.240~14.04.1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1069.77)
xenial
Released (4.15.0-1069.77~16.04.1)
cosmic Ignored
(end of life)
disco
Released (5.0.0-1004.8)
eoan Not vulnerable
(5.3.0-1002.2)
focal Not vulnerable
(5.4.0-1005.5)
groovy Not vulnerable
(5.4.0-1009.9)
hirsute Not vulnerable
(5.8.0-1014.14+21.04.1)
trusty Does not exist

upstream
Released (4.18~rc3)
linux-raspi2
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1083.88)
xenial
Released (4.4.0-1150.161)
artful Ignored
(end of life)
cosmic Not vulnerable
(4.18.0-1004.6)
disco Not vulnerable
(4.18.0-1005.7)
eoan Not vulnerable
(5.0.0-1006.6)
focal Not vulnerable
(5.4.0-1004.4)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1100.109)
xenial
Released (4.4.0-1154.164)
artful Ignored
(end of life)
cosmic Does not exist

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

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
linux-oem-5.6
Launchpad, Ubuntu, Debian
groovy Does not exist

bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.6.0-1007.7)
hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-aws-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1021.24~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-aws-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1016.17~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-aws-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1018.18~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial
Released (4.15.0-1098.105~16.04.1)
linux-azure-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1007.8~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
xenial Ignored
(abandoned)
linux-gcp-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1008.9~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-gcp-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1019.19~18.04.2)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic
Released (5.0.0-1020.20~18.04.1)
cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Not vulnerable
(5.4.0-1033.35)
groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Ignored
(end of standard support)
linux-gke-4.15
Launchpad, Ubuntu, Debian
bionic Ignored
(end of life, was needed)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-gke-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Ignored
(end of life, was pending)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Ignored
(end of life, was needed)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was ignored)
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was ignored)
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Ignored
(end of life, was ignored)
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
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

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc3)
xenial Does not exist

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

bionic Ignored
(end of life, was needed)
cosmic Ignored
(end of life)
disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Ignored
(end of standard support, was needed)
linux-oem-osp1
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1010.11)
disco Not vulnerable
(5.0.0-1010.11)
eoan Not vulnerable
(5.0.0-1010.11)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-oracle-5.0
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.0.0-1007.12~18.04.1)
disco Does not exist

eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-oracle-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1011.12~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-oracle-5.4
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.4.0-1019.19~18.04.1)
focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-raspi
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-1007.7)
groovy Not vulnerable
(5.4.0-1008.8)
hirsute Not vulnerable
(5.8.0-1008.11+21.04.1)
trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-raspi2-5.3
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(5.3.0-1017.19~18.04.1)
eoan Does not exist

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

linux-riscv
Launchpad, Ubuntu, Debian
bionic Does not exist

eoan Does not exist

focal Not vulnerable
(5.4.0-24.28)
groovy Not vulnerable
(5.4.0-24.28)
hirsute Not vulnerable
(5.8.0-10.12+21.04.1)
trusty Does not exist

upstream
Released (4.18~rc3)
xenial Does not exist

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H