---
title: "CVE-2026-90228: Linux Kernel - Denial of Service"
description: "Linux kernel contains a NULL pointer dereference caused by improper handling of file-backed namespaces in nvmet_execute_identify_ns_zns(), letting remote attackers cause a denial of service by issuing specific Identify commands, exploit requires CONFIG_BLK_DEV_ZONED enabled and file-backed namespace."
url: https://panop.io/threat-heartbeat/CVE-2026-90228/
---

# CVE-2026-90228 Linux Kernel - Denial of Service

Linux kernel contains a NULL pointer dereference caused by improper handling of file-backed namespaces in nvmet\_execute\_identify\_ns\_zns(), letting remote attackers cause a denial of service by issuing specific Identify commands, exploit requires CONFIG\_BLK\_DEV\_ZONED enabled and file-backed namespace.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.67% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90228)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version with the fix applied.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90228](https://nvd.nist.gov/vuln/detail/CVE-2026-90228)
- [https://git.kernel.org/stable/c/b873099944dae5702b4b6db6814d1f1e8d4cfb00](https://git.kernel.org/stable/c/b873099944dae5702b4b6db6814d1f1e8d4cfb00)
- [https://git.kernel.org/stable/c/cc29f7082b7ab5e0337f27d1fef16359f05fcffa](https://git.kernel.org/stable/c/cc29f7082b7ab5e0337f27d1fef16359f05fcffa)
- [https://git.kernel.org/stable/c/f594863967d87b7fcbff6e724d51135fd701a13d](https://git.kernel.org/stable/c/f594863967d87b7fcbff6e724d51135fd701a13d)
- [https://git.kernel.org/stable/c/ff28a93a895912010a7827a0e1445ebe8be53b4d](https://git.kernel.org/stable/c/ff28a93a895912010a7827a0e1445ebe8be53b4d)
- [https://git.kernel.org/stable/c/0b4cf43f9ca7118590a338de900edbd6047cd89f](https://git.kernel.org/stable/c/0b4cf43f9ca7118590a338de900edbd6047cd89f)
- [https://git.kernel.org/stable/c/1ce8faf90eb0bf5599b90db38500aefea9426485](https://git.kernel.org/stable/c/1ce8faf90eb0bf5599b90db38500aefea9426485)
- [https://git.kernel.org/stable/c/1fb1236312ee1a600de6b3ca560f0b3fd5a50471](https://git.kernel.org/stable/c/1fb1236312ee1a600de6b3ca560f0b3fd5a50471)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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