CVE-2018-16597 Missing authorization in n/a

What is CVE-2018-16597?

CVE-2018-16597 is a medium-severity missing authorization vulnerability in Linux kernel, published on 21 Sep 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in the Linux kernel before 4.8. Incorrect access checking in overlayfs mounts could be used by local attackers to modify or truncate files in the underlying filesystem.

Weakness: CWE-863

Which versions are affected by CVE-2018-16597?

It affects 4 products.

Products include Linux kernel, Netapp Active Iq Performance Analytics Services, Netapp Element Software, Opensuse Leap.

How do I fix CVE-2018-16597?

Upgrade to a fixed version.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-16597 being exploited?

There is no known exploitation of CVE-2018-16597 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-2018-16597, GHSA-8j89-mf7f-m8q3.