What’s Vulnerable › Vulnerabilities

CVE-2026-93790: wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA 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 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: fix out-of-bounds tid_data access in BA notif mvmsta->tid_data was indexed by the TFD loop counter 'i' instead of the actual TID value 'tid'. This writes lq_color into a random tid_data slot unrelated to the BA entry. Since multi-TID blockack is not really in use, 'i' was always 0 and no harm was done. Add a out-of-bound check before accessing the array.

Affected products

• Linux: 4.15 — fixed in 7.2

How to fix

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

References

• https://git.kernel.org/stable/c/35f991d685feafd27255bd33272512c434e52527
• https://git.kernel.org/stable/c/94d3982806c7f194b23484befde12934dda23064
• https://git.kernel.org/stable/c/c48b741277b01b2c3b4ecccedc72fc575b71dc04
• https://git.kernel.org/stable/c/e8ac5e91b1296f65c3d119fac3fa917ff458f811
• https://git.kernel.org/stable/c/ed9869e64dd7a397a320ae7a37f1e4a36f866f74

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