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CVE-2026-93074

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: dax/fsdev: use __va(phys) for kaddr in direct_access Use __va(phys) instead of virt_addr + linear_offset for the kaddr return i…

Published Sep 17, 2026EPSS 0.17%

Overview

CVE-2026-93074 is a high-severity vulnerability. It was published on September 17, 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. Some level of privileges is required for exploitation.

Technical description

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

dax/fsdev: use __va(phys) for kaddr in direct_access

Use __va(phys) instead of virt_addr + linear_offset for the kaddr

return in __fsdev_dax_direct_access(). The previous code added a

device-linear byte offset to virt_addr (which is __va of ranges[0]),

but for multi-range devices with physical gaps between ranges, this

linear arithmetic crosses the gap and produces a wrong kernel virtual

address. Using __va(phys) where phys comes from dax_pgoff_to_phys()

is correct for any range layout because the direct map translates

each physical address independently.

This leaves dev_dax->virt_addr write-only, so remove the field

(suggested by Dave Jiang).

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/7b642bd3d39105eef4d5908970726c5fda291b53Refgit.kernel.org/stable/c/ff7c73fca793bd5c29a15ba735b0886f62f3a840

How CyberStrike helps

Frequently asked questions

What is CVE-2026-93074?

CVE-2026-93074 is a high-severity vulnerability. It was published on September 17, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-93074?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-93074?

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-2026-93074?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-93074 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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