What’s Vulnerable › Vulnerabilities

CVE-2025-21828: wifi: mac80211: don't flush non-uploaded STAs

• Severity: medium (CVSS 5.5 v3.1)
• 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: 2025-03-06 · updated 2026-07-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: don't flush non-uploaded STAs If STA state is pre-moved to AUTHORIZED (such as in IBSS scenarios) and insertion fails, the station is freed. In this case, the driver never knew about the station, so trying to flush it is unexpected and may crash. Check if the sta was uploaded to the driver before and fix this.

Affected products

• Linux kernel: from 6.4 before 6.6.76; from 6.7 before 6.12.13; from 6.13 before 6.13.2 — fixed in 6.12.13, 6.13.2, 6.6.76

How to fix

Upgrade to a fixed version: Linux kernel 6.12.13, 6.13.2, 6.6.76. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/9efb5531271fa7ebae993b2a33a705d9947c7ce6
• https://git.kernel.org/stable/c/aa3ce3f8fafa0b8fb062f28024855ea8cb3f3450
• https://git.kernel.org/stable/c/cd10b7fcb95a6a86c67adc54304c59a578ab16af
• https://git.kernel.org/stable/c/cf21ef3d430847ba864bbc9b2774fffcc03ce321

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