What’s Vulnerable › Vulnerabilities

CVE-2025-39991: wifi: ath11k: fix NULL dereference in ath11k_qmi_m3_load()

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-15 · updated 2026-10-19

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.

Affected products

• Linux kernel: 6.7 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

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

Get alerted when CVE-2025-39991 or the next vulnerability affects your stack