CVE-2018-13093 Null dereference in n/a

What is CVE-2018-13093?

CVE-2018-13093 is a medium-severity vulnerability in Linux kernel, published on 3 Jul 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2018-13093?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2018-13093?

Apply the vendor's patch.

Is CVE-2018-13093 being exploited?

There is no known exploitation of CVE-2018-13093 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-13093, GHSA-rhjq-jcf3-f32g, UBUNTU-CVE-2018-13093.