---
title: "CVE-2026-89605: Linux Kernel ecryptfs - Resource Management Flaw"
description: "Linux kernel ecryptfs contains a resource management flaw caused by improper handling of message context on send failure in ecryptfs_send_message_locked, letting attackers cause resource leaks, exploit requires triggering send failure."
url: https://panop.io/threat-heartbeat/CVE-2026-89605/
---

# CVE-2026-89605 Linux Kernel ecryptfs - Resource Management Flaw

Linux kernel ecryptfs contains a resource management flaw caused by improper handling of message context on send failure in ecryptfs\_send\_message\_locked, letting attackers cause resource leaks, exploit requires triggering send failure.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.17% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89605)

## Details

Type

Resource Management Flaw

Impact

Denial Of Service

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

## Vendor fix

Update to the latest Linux kernel version containing the fix.

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-2026-89605](https://nvd.nist.gov/vuln/detail/CVE-2026-89605)
- [https://git.kernel.org/stable/c/743e7aeb9575c0838d8996d40d81a6b8fa5cd060](https://git.kernel.org/stable/c/743e7aeb9575c0838d8996d40d81a6b8fa5cd060)
- [https://git.kernel.org/stable/c/219644a3ad5518217b2d62cad6d2c36a2308c949](https://git.kernel.org/stable/c/219644a3ad5518217b2d62cad6d2c36a2308c949)
- [https://git.kernel.org/stable/c/47ce611cb13f0eefa550d5434c1afcd4217bfc3e](https://git.kernel.org/stable/c/47ce611cb13f0eefa550d5434c1afcd4217bfc3e)
- [https://git.kernel.org/stable/c/654b7e79443f5ea90849f5c1cf70c0d94bd5b10e](https://git.kernel.org/stable/c/654b7e79443f5ea90849f5c1cf70c0d94bd5b10e)
- [https://git.kernel.org/stable/c/9319706316a8e79f374627554386d575a84b637f](https://git.kernel.org/stable/c/9319706316a8e79f374627554386d575a84b637f)
- [https://git.kernel.org/stable/c/177e0c32fec3602bb3b64139bb8bb610cd6722c7](https://git.kernel.org/stable/c/177e0c32fec3602bb3b64139bb8bb610cd6722c7)
- [https://git.kernel.org/stable/c/30845ed227475a11a49ccce047837d016b7e0f49](https://git.kernel.org/stable/c/30845ed227475a11a49ccce047837d016b7e0f49)
- [https://git.kernel.org/stable/c/590fc6140e29c54d2f7839eb9df78d106ee1905e](https://git.kernel.org/stable/c/590fc6140e29c54d2f7839eb9df78d106ee1905e)

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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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