---
title: "CVE-2026-89680: Linux Kernel - Resource Leak"
description: "Linux kernel contains a resource leak vulnerability caused by improper error handling in nfsd4_setup_inter_ssc during inter-server COPY setup failure, letting attackers cause resource exhaustion, exploit requires triggering inter-server COPY failure."
url: https://panop.io/threat-heartbeat/CVE-2026-89680/
---

# CVE-2026-89680 Linux Kernel - Resource Leak

Linux kernel contains a resource leak vulnerability caused by improper error handling in nfsd4\_setup\_inter\_ssc during inter-server COPY setup failure, letting attackers cause resource exhaustion, exploit requires triggering inter-server COPY failure.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

EPSS

0.65% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89680)

## 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 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-2026-89680](https://nvd.nist.gov/vuln/detail/CVE-2026-89680)
- [https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd](https://git.kernel.org/stable/c/6ed8d6de7ec90c4ba84eb82673058f506e5777fd)
- [https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399](https://git.kernel.org/stable/c/88a76145451d703eedd867b5989bf73d17340399)
- [https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab](https://git.kernel.org/stable/c/1a6a41b848455bf6ba2c9da2dfb0730e608ce7ab)
- [https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078](https://git.kernel.org/stable/c/424d5c95108a4809b832cb0a312c61de4aec0078)

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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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