---
title: "CVE-2026-89974: Linux Kernel nvme-fc - Use After Free"
description: "Linux kernel nvme-fc contains a double free vulnerability caused by improper management of fabrics options pointers in nvme_add_ctrl() error paths, letting attackers cause kernel memory corruption, exploit requires triggering nvme_add_ctrl() failure."
url: https://panop.io/threat-heartbeat/CVE-2026-89974/
---

# CVE-2026-89974 Linux Kernel nvme-fc - Use After Free

Linux kernel nvme-fc contains a double free vulnerability caused by improper management of fabrics options pointers in nvme\_add\_ctrl() error paths, letting attackers cause kernel memory corruption, exploit requires triggering nvme\_add\_ctrl() failure.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.29% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89974)

## Details

Type

Use After Free

Impact

Denial Of Service

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the Linux kernel version containing commit 1a9e218195a5 or later.

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-2026-89974](https://nvd.nist.gov/vuln/detail/CVE-2026-89974)
- [https://git.kernel.org/stable/c/56e6279266f6962bb2d38a54397e3c605165b0c5](https://git.kernel.org/stable/c/56e6279266f6962bb2d38a54397e3c605165b0c5)
- [https://git.kernel.org/stable/c/5f89d68c00ccd1b25151da0bf660012380c2bad9](https://git.kernel.org/stable/c/5f89d68c00ccd1b25151da0bf660012380c2bad9)
- [https://git.kernel.org/stable/c/7df913a7ced5d7349f0b23bdcf25ad54fe83a1c1](https://git.kernel.org/stable/c/7df913a7ced5d7349f0b23bdcf25ad54fe83a1c1)
- [https://git.kernel.org/stable/c/8bd14aa065112b4d523bea690027c7527a6224f6](https://git.kernel.org/stable/c/8bd14aa065112b4d523bea690027c7527a6224f6)

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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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