Go to homepageCyberStrike

Menu

Star on GitHub · 3.4k
Sign inDownload

CVE-2026-98140

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local leak in write_mft_record_nolock() error paths write_mft_record_nolock() maps the MFT record folio with kma…

Published Sep 25, 2026linuxCWE-401EPSS 0.10%

Overview

CVE-2026-98140 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

ntfs: fix kmap_local leak in write_mft_record_nolock() error paths

write_mft_record_nolock() maps the MFT record folio with

kmap_local_folio(), but the pre_write_mst_fixup() and

bio_add_folio() failure paths jump to the error label without

unmapping it. kmap_local mappings are stack-ordered per task, so

leaking one corrupts the nesting for any outer mapping.

Unmap the folio on those error paths too.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
linuxlinux_kernel>= 7.1, < 7.2.7Affected

References

Refgit.kernel.org/stable/c/5d7f7bf8fba8cf563b42b44aa4ab3d9928ac480cRefgit.kernel.org/stable/c/cf06dcd572845723821b54a608fc2da995c3c8e2

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98140?

CVE-2026-98140 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 25, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-98140?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-98140?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2026-98140?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98140 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.

Related MEDIUM CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
Watch the demo →