CVE-2018-18690

Name: CVE-2018-18690
Creator: NVD / NIST
Published: 2018-10-26T18:29:00.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.68%

Last modified Jun 17, 2026

CVE-2018-18690 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.68% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

0.68%

47.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-754

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	< 4.17
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Debian	Debian Linux	8.0

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473cPatch, Vendor Advisory
http://www.securityfocus.com/bid/105753Third Party Advisory, VDB Entry
https://bugzilla.kernel.org/show_bug.cgi?id=199119Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1105025Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473cPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3847-1/Third Party Advisory
https://usn.ubuntu.com/3847-2/Third Party Advisory
https://usn.ubuntu.com/3847-3/Third Party Advisory
https://usn.ubuntu.com/3848-1/Third Party Advisory
https://usn.ubuntu.com/3848-2/Third Party Advisory
https://usn.ubuntu.com/3849-1/Third Party Advisory
https://usn.ubuntu.com/3849-2/Third Party Advisory
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7b38460dc8e4eafba06c78f8e37099d3b34d473cPatch, Vendor Advisory
http://www.securityfocus.com/bid/105753Third Party Advisory, VDB Entry
https://bugzilla.kernel.org/show_bug.cgi?id=199119Exploit, Issue Tracking, Vendor Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1105025Issue Tracking, Third Party Advisory
https://github.com/torvalds/linux/commit/7b38460dc8e4eafba06c78f8e37099d3b34d473cPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00017.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/03/msg00034.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/04/msg00004.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3847-1/Third Party Advisory
https://usn.ubuntu.com/3847-2/Third Party Advisory
https://usn.ubuntu.com/3847-3/Third Party Advisory
https://usn.ubuntu.com/3848-1/Third Party Advisory
https://usn.ubuntu.com/3848-2/Third Party Advisory
https://usn.ubuntu.com/3849-1/Third Party Advisory
https://usn.ubuntu.com/3849-2/Third Party Advisory

Timeline

Published: Oct 26, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-18690?

How severe is CVE-2018-18690?

Severity scoring for CVE-2018-18690 is pending analysis. The EPSS model estimates a 0.68% probability of exploitation in the next 30 days.

How do I fix CVE-2018-18690?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-18690?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST