---
title: "CVE-2026-98889: Linux kernel iwlwifi mvm - Buffer Overflow"
description: "Linux kernel iwlwifi mvm contains a buffer overflow vulnerability caused by building probe requests before length validation in scheduled scans, letting attackers cause memory corruption, exploit requires crafted scan requests."
url: https://panop.io/threat-heartbeat/CVE-2026-98889/
---

# CVE-2026-98889 Linux kernel iwlwifi mvm - Buffer Overflow

Linux kernel iwlwifi mvm contains a buffer overflow vulnerability caused by building probe requests before length validation in scheduled scans, letting attackers cause memory corruption, exploit requires crafted scan requests.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.21% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98889)

## Details

Type

Buffer Overflow

Impact

Denial Of Service, Remote Code Execution

CVSS vector

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

Published

23 October 2026

Updated

25 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-2026-98889](https://nvd.nist.gov/vuln/detail/CVE-2026-98889)
- [https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f](https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f)
- [https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f](https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f)
- [https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae](https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae)
- [https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2](https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2)
- [https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a](https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a)
- [https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec](https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec)

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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

Panop answers these inside your environment, for this CVE and every other finding.

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