CVE-2018-18690
Published: 26 October 2018
In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.
From the Ubuntu Security Team
Kanda Motohiro discovered that writing extended attributes to an XFS file system in the Linux kernel in certain situations could cause an error condition to occur. A local attacker could use this to cause a denial of service.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-43.46)
|
| cosmic |
Not vulnerable
(4.17.0-6.7)
|
|
| trusty |
Released
(3.13.0-164.214)
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.4.0-141.167)
|
|
|
Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 |
||
|
linux-aws Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1031.33)
|
| cosmic |
Not vulnerable
(4.18.0-1002.3)
|
|
| trusty |
Released
(4.4.0-1037.40)
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.4.0-1074.84)
|
|
|
linux-aws-hwe Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-1031.33~16.04.1)
|
|
|
linux-oracle Launchpad, Ubuntu, Debian |
cosmic |
Not vulnerable
|
| bionic |
Not vulnerable
(4.15.0-1007.9)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Not vulnerable
(4.15.0-1007.9~16.04.1)
|
|
|
linux-azure Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1036.38)
|
| cosmic |
Not vulnerable
(4.18.0-1003.3)
|
|
| trusty |
Released
(4.15.0-1036.38~14.04.2)
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-1036.38~16.04.1)
|
|
|
linux-azure-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1036.38)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-1036.38~16.04.1)
|
|
|
linux-euclid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(was needs-triage ESM criteria)
|
|
|
linux-flo Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-gcp Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1026.27)
|
| cosmic |
Not vulnerable
(4.18.0-1002.3)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-1026.27~16.04.1)
|
|
|
linux-gcp-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-1004.5~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-gke Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(end of standard support)
|
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(end of life)
|
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-hwe Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.18.0-13.14~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-43.46~16.04.1)
|
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(5.0.0-8.9~18.04.1)
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.15.0-43.46~16.04.1)
|
|
|
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1028.28)
|
| cosmic |
Not vulnerable
(4.18.0-1002.2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.4.0-1039.45)
|
|
|
linux-lts-trusty Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-utopic Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-wily Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Released
(4.4.0-141.167~14.04.1)
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-maguro Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-mako Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(abandoned)
|
|
|
linux-manta Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Does not exist
|
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1030.35)
|
| cosmic |
Released
(4.15.0-1030.35)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Ignored
(end of standard support, was needs-triage)
|
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
bionic |
Released
(4.15.0-1030.32)
|
| cosmic |
Not vulnerable
(4.18.0-1004.6)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.4.0-1102.110)
|
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
|
| cosmic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.17~rc4)
|
|
| xenial |
Released
(4.4.0-1106.111)
|
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 5.5 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18690
- https://ubuntu.com/security/notices/USN-3847-1
- https://ubuntu.com/security/notices/USN-3847-2
- https://ubuntu.com/security/notices/USN-3847-3
- https://ubuntu.com/security/notices/USN-3848-1
- https://ubuntu.com/security/notices/USN-3848-2
- https://ubuntu.com/security/notices/USN-3849-1
- https://ubuntu.com/security/notices/USN-3849-2
- NVD
- Launchpad
- Debian