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CVE-2018-10840

Published: 16 July 2018

Linux kernel is vulnerable to a heap-based buffer overflow in the fs/ext4/xattr.c:ext4_xattr_set_entry() function. An attacker could exploit this by operating on a mounted crafted ext4 image.

From the Ubuntu Security Team

Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate xattr information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Low

Cvss 3 Severity Score

6.6

Score breakdown

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-33.36)
upstream
Released (4.18~rc1)
trusty Not vulnerable

artful Ignored
(end of life)
cosmic Not vulnerable
(4.17.0-6.7)
xenial Not vulnerable

Patches:
Introduced by

dec214d00e0d78a08b947d7dccdfdb84407a9f4d

Fixed by 8a2b307c21d4b290e3cbe33f768f194286d07c23
linux-lts-trusty
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(end of life, was needs-triage)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
upstream
Released (4.18~rc1)
bionic Does not exist

artful Does not exist

cosmic Does not exist

trusty Not vulnerable

xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

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

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

linux-aws
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1020.20)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1020.20)
trusty Not vulnerable

xenial Not vulnerable

linux-azure
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1022.23)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Not vulnerable
(4.18.0-1003.3)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial
Released (4.15.0-1022.22~16.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.15.0-1022.23)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Not vulnerable

linux-gcp
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1018.19)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1018.19)
trusty Does not exist

xenial
Released (4.15.0-1018.19~16.04.2)
linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Ignored
(end of standard support, was needs-triage)
linux-hwe
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.15.0-33.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-11.12~18.04.1)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.15.0-33.36~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1020.20)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1020.20)
trusty Does not exist

xenial Not vulnerable

linux-oem
Launchpad, Ubuntu, Debian
bionic
Released (4.15.0-1017.20)
upstream
Released (4.18~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1017.20)
trusty Does not exist

xenial Ignored
(end of standard support, was needed)
linux-snapdragon
Launchpad, Ubuntu, Debian
bionic Not vulnerable

upstream
Released (4.18~rc1)
artful Not vulnerable

cosmic Does not exist

trusty Does not exist

xenial Not vulnerable

linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic
Released (4.15.0-1021.23)
cosmic Not vulnerable
(4.15.0-1021.23)
trusty Does not exist

upstream
Released (4.18~rc1)
xenial Not vulnerable

Severity score breakdown

Parameter Value
Base score 6.6
Attack vector Physical
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H