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CVE-2026-97548

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions The _maxlevels_ondisk functions are used to compute the size of…

Published Sep 25, 2026EPSS 0.17%

Overview

CVE-2026-97548 is a high-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

xfs: fix the rtrmap and rtrefcount _maxlevels_ondisk functions

The _maxlevels_ondisk functions are used to compute the size of

in-memory btree cursors for each btree type. Unfortunately, LOLLM

noticed that the rtrmap and rtrefcount versions of these functions

forget to account for the inode root, which means that we could access

beyond the end of the cursor given a sufficiently large btree. Fix

this.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/108114437915e61e8f88d1cbcc442c3f886a347eRefgit.kernel.org/stable/c/84316cb25af95a60e655ccc8fe646bb5ad631b71Refgit.kernel.org/stable/c/aa301322f72f82f26e4ba0826018d41388ab9896

How CyberStrike helps

Frequently asked questions

What is CVE-2026-97548?

CVE-2026-97548 is a high-severity vulnerability. It was published on September 25, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-97548?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-97548?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-97548?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-97548 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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