CVE intelligence

CVE-2018-13093

Vulnerability intelligence

Published Jul 3, 2018Sources checked Oct 21, 2026

5.5MEDIUMCVSS out of 10

What this means

Review the available evidence

CVE-2018-13093 and is rated Medium severity with a CVSS score of 5.5. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.

What to do next

Remediation and response

Ubuntu Security Notices guidance

Vendor revision: Oct 13, 2026

This update corrects flaws in the following subsystems: - IPv6 networking; - Netfilter; (CVE-2026-53131)

CISA KEVNot listedBased on the latest collected catalog

EPSS1.7%Estimated 30-day exploitation probability

Ransomware useNot markedCISA KEV ransomware field

Threat actors0Source-linked actor relationships

Overview

What is CVE-2018-13093?

An issue was discovered in fs/xfs/xfs_icache.c in the Linux kernel through 4.17.3. There is a NULL pointer dereference and panic in lookup_slow() on a NULL inode->i_ops pointer when doing pathwalks on a corrupted xfs image.

This occurs because of a lack of proper validation that cached inodes are free during allocation.

Source: NVD