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CVE-2026-90227

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed() Unlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls nvme_cmd_allowed().

Published Sep 17, 2026EPSS 0.17%

Overview

CVE-2026-90227 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:

nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed()

Unlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls

nvme_cmd_allowed(). Unprivileged callers can thus issue I/O on a

partition device or write through a read-only file descriptor.

Pass flags and open_for_write through and reject disallowed commands

with -EACCES.

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/736b7c6adc7a65c4411beff197b6a634f7a6ca27Refgit.kernel.org/stable/c/95b0591d51dbf9e618d7845883d535e88ad7c8afRefgit.kernel.org/stable/c/b116e9dae433ff631f94c36c61a7a78fe400ed1eRefgit.kernel.org/stable/c/b53d495c7f0db46b6748b5ade48371a10dd5d3bcRefgit.kernel.org/stable/c/c35cd98eed1a863e8dd51073953563cd8c907f68

How CyberStrike helps

Frequently asked questions

What is CVE-2026-90227?

CVE-2026-90227 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-2026-90227?

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-2026-90227?

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-2026-90227?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90227 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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