What’s Vulnerable › Vulnerabilities

CVE-2026-93799: wifi: iwlwifi: mvm: validate sta_id in BA window status notif

• Severity: high (CVSS 8.8 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: 2026-09-24 · updated 2026-10-03

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: validate sta_id in BA window status notif BA_WINDOW_STATUS_NOTIFICATION_ID extracts a 5-bit sta_id from the firmware notification and uses it to index fw_id_to_mac_id[] without bounds checking. Validate sta_id before array access to prevent out-of-bounds indexing.

Affected products

• Linux kernel: 4.6 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/6aa77efaea9efea92e3090c35ad348fd759a3cf3
• https://git.kernel.org/stable/c/bb08fbbbd5568d33069485ecb0a1657f115a4e9f
• https://git.kernel.org/stable/c/e35ae757c6462bfd3437bf58121bb721fe1f790c
• https://git.kernel.org/stable/c/f9938eb95e2ddab4a58d3946a320abcbd60b56a4

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