---
title: "CVE-2026-98056: Linux Kernel nvme - Denial of Service"
description: "Linux kernel nvme subsystem contains a denial of service caused by inefficient stale namespace removal in nvme_scan_ns_list, letting attackers with sparse NSID space cause CPU soft lockup, exploit requires sparse NSID gaps."
url: https://panop.io/threat-heartbeat/CVE-2026-98056/
---

# CVE-2026-98056 Linux Kernel nvme - Denial of Service

Linux kernel nvme subsystem contains a denial of service caused by inefficient stale namespace removal in nvme\_scan\_ns\_list, letting attackers with sparse NSID space cause CPU soft lockup, exploit requires sparse NSID gaps.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.60% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98056)

## 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

25 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for efficient stale namespace removal.

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-2026-98056](https://nvd.nist.gov/vuln/detail/CVE-2026-98056)
- [https://git.kernel.org/stable/c/4ed7f3d7d435bf5b63da2814dc9270f5ba896011](https://git.kernel.org/stable/c/4ed7f3d7d435bf5b63da2814dc9270f5ba896011)
- [https://git.kernel.org/stable/c/52200fc41a79da430ccf7c126ed837535b087ea2](https://git.kernel.org/stable/c/52200fc41a79da430ccf7c126ed837535b087ea2)
- [https://git.kernel.org/stable/c/c84ad7407fb16b92d9b7a649cc304a9cf3757897](https://git.kernel.org/stable/c/c84ad7407fb16b92d9b7a649cc304a9cf3757897)
- [https://git.kernel.org/stable/c/f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4](https://git.kernel.org/stable/c/f56b2bb4b18b017b056c4c17c66b2c4c54bf6ee4)

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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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