CVE-2018-10840

Name: CVE-2018-10840
Creator: NVD / NIST
Published: 2018-07-16T20:29:00.377+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.6/10EPSS 0.66%

Last modified Jun 17, 2026

CVE-2018-10840 is a medium-severity vulnerability rated 6.6/10 on the CVSS scale. 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.. EPSS estimates a 0.66% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

6.6/10

CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.66%

47.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	All versions
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	18.04
Redhat	Enterprise Linux	7.0

References

http://www.securityfocus.com/bid/104858Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0162Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10840Exploit, Issue Tracking, Patch, Third Party Advisory
https://usn.ubuntu.com/3752-1/Third Party Advisory
https://usn.ubuntu.com/3752-2/Third Party Advisory
https://usn.ubuntu.com/3752-3/Third Party Advisory
http://www.securityfocus.com/bid/104858Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:0162Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10840Exploit, Issue Tracking, Patch, Third Party Advisory
https://usn.ubuntu.com/3752-1/Third Party Advisory
https://usn.ubuntu.com/3752-2/Third Party Advisory
https://usn.ubuntu.com/3752-3/Third Party Advisory

Timeline

Published: Jul 16, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-10840?

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.

How severe is CVE-2018-10840?

CVE-2018-10840 has a CVSS score of 6.6/10 (MEDIUM severity). The EPSS model estimates a 0.66% probability of exploitation in the next 30 days.

How do I fix CVE-2018-10840?

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-2018-10840?

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

Scan your code now

Source: NVD / NIST