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
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Released
(4.15.0-33.36)
|
|
| artful |
Ignored
(end of life)
|
|
| cosmic |
Not vulnerable
(4.17.0-7.8)
|
|
| trusty |
Released
(3.13.0-157.207)
|
|
| xenial |
Released
(4.4.0-134.160)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-flo Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-aws Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Released
(4.15.0-1020.20)
|
|
| artful |
Does not exist
|
|
| cosmic |
Not vulnerable
(4.15.0-1020.20)
|
|
| trusty |
Released
(4.4.0-1028.31)
|
|
| xenial |
Released
(4.4.0-1066.76)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Released
(4.15.0-1022.23)
|
|
| 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 |
upstream |
Released
(4.18~rc2)
|
| bionic |
Not vulnerable
(4.18.0-1003.3~18.04.1)
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Released
(4.15.0-1022.23)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Released
(4.15.0-1018.19)
|
|
| 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-euclid Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Does not exist
|
|
| artful |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| xenial |
Ignored
(was needed ESM criteria)
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
upstream |
Released
(4.18~rc2)
|
| bionic |
Released
(4.15.0-1017.20)
|
|
| 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-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc2)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc2)
|
|
| xenial |
Ignored
(end of life, was needs-triage)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| cosmic |
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
|
|
| 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
|
|
| 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)
|
|
| 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
|
|
| 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
|
|
| trusty |
Does not exist
(trusty was ignored [end 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
|
|
| trusty |
Does not exist
(trusty was ignored [end 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
|
|
| trusty |
Does not exist
(trusty was ignored [end 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
|
|
| 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
|
|
| 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
|
|
| 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
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.18~rc2)
|
|
| xenial |
Does not exist
|
|
|
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~rc2)
|
|
| xenial |
Released
(4.4.0-1095.103)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
| bionic |
Not vulnerable
|
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.18~rc2)
|
|
| xenial |
Released
(4.4.0-1099.104)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12233
- https://lkml.org/lkml/2018/6/2/2
- https://marc.info/?l=linux-kernel&m=152814391530549&w=2
- https://ubuntu.com/security/notices/USN-3752-1
- https://ubuntu.com/security/notices/USN-3752-2
- https://ubuntu.com/security/notices/USN-3753-1
- https://ubuntu.com/security/notices/USN-3753-2
- https://ubuntu.com/security/notices/USN-3754-1
- https://ubuntu.com/security/notices/USN-3752-3
- NVD
- Launchpad
- Debian