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CVE-2018-12233

Published: 12 June 2018

In the ea_get function in fs/jfs/xattr.c in the Linux kernel through 4.17.1, a memory corruption bug in JFS can be triggered by calling setxattr twice with two different extended attribute names on the same file. This vulnerability can be triggered by an unprivileged user with the ability to create files and execute programs. A kmalloc call is incorrect, leading to slab-out-of-bounds in jfs_xattr.

From the Ubuntu Security Team

Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Medium

CVSS 3 base score: 7.8

Status

Package Release Status
linux
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-33.36)
cosmic Not vulnerable
(4.17.0-7.8)
precise Ignored
(was needed ESM criteria)
trusty
Released (3.13.0-157.207)
upstream
Released (4.18~rc2)
xenial
Released (4.4.0-134.160)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by 92d34134193e5b129dc24f8d79cb9196626e8d7a
linux-aws
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1020.20)
cosmic Not vulnerable
(4.15.0-1020.20)
precise Does not exist

trusty
Released (4.4.0-1028.31)
upstream
Released (4.18~rc2)
xenial
Released (4.4.0-1066.76)
linux-azure
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1022.23)
cosmic Not vulnerable
(4.18.0-1003.3)
precise Does not exist

trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
upstream
Released (4.18~rc2)
xenial
Released (4.15.0-1022.22~16.04.1)
linux-azure-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-1003.3~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.15.0-1022.23)
linux-euclid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial Ignored
(was needed ESM criteria)
linux-flo
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1018.19)
cosmic Not vulnerable
(4.15.0-1018.19)
precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.15.0-1018.19~16.04.2)
linux-gke
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial Ignored
(was needs-triage now end-of-life)
linux-goldfish
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Ignored
(was needs-triage now end-of-life)
linux-grouper
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Not vulnerable

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.15.0-33.36~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-11.12~18.04.1)
cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.15.0-33.36~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic
Released (4.15.0-1020.20)
cosmic Not vulnerable
(4.15.0-1020.20)
precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.4.0-1032.38)
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

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

upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [out of standard support])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty
Released (4.4.0-134.160~14.04.1)
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Ignored
(abandoned)
linux-manta
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

precise Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
upstream
Released (4.18~rc2)
xenial Does not exist

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

bionic
Released (4.15.0-1017.20)
cosmic Not vulnerable
(4.15.0-1017.20)
precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial Ignored
(was needed now end-of-life)
linux-raspi2
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic
Released (4.15.0-1021.23)
cosmic Not vulnerable
(4.15.0-1021.23)
precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.4.0-1095.103)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Ignored
(reached end-of-life)
bionic Not vulnerable

cosmic Does not exist

precise Does not exist

trusty Does not exist

upstream
Released (4.18~rc2)
xenial
Released (4.4.0-1099.104)