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CVE-2026-43245

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ntfs: ->d_compare() must not block ...

Published May 6, 2026EPSS 0.63%

Overview

CVE-2026-43245 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

ntfs: ->d_compare() must not block

... so don't use __getname() there. Switch it (and ntfs_d_hash(), while

we are at it) to kmalloc(PATH_MAX, GFP_NOWAIT). Yes, ntfs_d_hash()

almost certainly can do with smaller allocations, but let ntfs folks

deal with that - keep the allocation size as-is for now.

Stop abusing names_cachep in ntfs, period - various uses of that thing

in there have nothing to do with pathnames; just use k[mz]alloc() and

be done with that. For now let's keep sizes as-in, but AFAICS none of

the users actually want PATH_MAX.

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/02ecc0978c459fd90bb24b2a946dd16d43e68fe5Refgit.kernel.org/stable/c/142c444a395f4d26055c8a4473e228bb86283f1eRefgit.kernel.org/stable/c/1be7ca86ce1794d966fda5d82181bc978b150fbcRefgit.kernel.org/stable/c/ca2a04e84af79596e5cd9cfe697d5122ec39c8ceRefgit.kernel.org/stable/c/fb4b1f969ba01fa1d4088467a02fc1e5f0806710

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43245?

CVE-2026-43245 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-43245?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-43245?

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-2026-43245?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43245 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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