---
title: "CVE-2026-89707: Linux Kernel - Resource Leak"
description: "Linux kernel contains a resource leak vulnerability in nfsd_cross_mnt() due to missing release of path references on follow_down() error, letting authenticated NFS clients cause resource exhaustion, exploit requires authenticated NFS client access."
url: https://panop.io/threat-heartbeat/CVE-2026-89707/
---

# CVE-2026-89707 Linux Kernel - Resource Leak

Linux kernel contains a resource leak vulnerability in nfsd\_cross\_mnt() due to missing release of path references on follow\_down() error, letting authenticated NFS clients cause resource exhaustion, exploit requires authenticated NFS client access.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.61% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89707)

## Details

Type

Resource Leak

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

11 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version with the fix for nfsd\_cross\_mnt() path reference release.

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-2026-89707](https://nvd.nist.gov/vuln/detail/CVE-2026-89707)
- [https://git.kernel.org/stable/c/194316df81263519156ebe714c4a286bee00e5be](https://git.kernel.org/stable/c/194316df81263519156ebe714c4a286bee00e5be)
- [https://git.kernel.org/stable/c/2bc4343308d85ee4e0dd3877b384306c96f114c2](https://git.kernel.org/stable/c/2bc4343308d85ee4e0dd3877b384306c96f114c2)
- [https://git.kernel.org/stable/c/467d56fd3ff57447a790c6dc3ede2d02a947d224](https://git.kernel.org/stable/c/467d56fd3ff57447a790c6dc3ede2d02a947d224)
- [https://git.kernel.org/stable/c/6cba08dc1922140d260cfeb30bbda4ee1bf869d8](https://git.kernel.org/stable/c/6cba08dc1922140d260cfeb30bbda4ee1bf869d8)
- [https://git.kernel.org/stable/c/085cfde7c2186acaad103f02d2c25435ad5224e9](https://git.kernel.org/stable/c/085cfde7c2186acaad103f02d2c25435ad5224e9)

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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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