---
title: "CVE-2026-89609: Linux Kernel - Race Condition"
description: "Linux kernel contains a race condition in ecryptfs daemon queue cleanup caused by improper locking of msg ctx list, letting attackers cause potential denial of service or data corruption, exploit requires concurrent daemon message processing."
url: https://panop.io/threat-heartbeat/CVE-2026-89609/
---

# CVE-2026-89609 Linux Kernel - Race Condition

Linux kernel contains a race condition in ecryptfs daemon queue cleanup caused by improper locking of msg ctx list, letting attackers cause potential denial of service or data corruption, exploit requires concurrent daemon message processing.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89609)

## Details

Type

Race Condition

Impact

Denial Of Service, Data Tampering

CVSS vector

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

Published

11 September 2026

Updated

15 October 2026

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89609](https://nvd.nist.gov/vuln/detail/CVE-2026-89609)
- [https://git.kernel.org/stable/c/956541efd125a10442f9514668bc5c852702c93b](https://git.kernel.org/stable/c/956541efd125a10442f9514668bc5c852702c93b)
- [https://git.kernel.org/stable/c/ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a](https://git.kernel.org/stable/c/ec1627bcb5b51ddd46b1ef27a9d5a9834abb0a6a)
- [https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd](https://git.kernel.org/stable/c/0d9636ecba34bd553ecf19049f7705505aea62fd)
- [https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31](https://git.kernel.org/stable/c/4c02acbe0a2692ca9991c51e62bbe6d6b59dac31)
- [https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f](https://git.kernel.org/stable/c/779972513c2fa8c7938e54976f686091dafff22f)
- [https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a](https://git.kernel.org/stable/c/7e48afafe7abc275f7b6916613bb18b821e7d94a)
- [https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19](https://git.kernel.org/stable/c/4d50b8aea11ad9594c8704a4c647e11311ab7b19)
- [https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3](https://git.kernel.org/stable/c/64d8998e36cfd2bb7114f3af0aa51c5a559a39b3)

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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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