What’s Vulnerable › Vulnerabilities

CVE-2026-93791: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware

• 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: 2026-09-24 · updated 2026-10-30

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: add a check on the tid coming from the firmware ba_notif->tid is a firmware-controlled u8 that is used directly as an array index into tid_data[] without any validation. Add a bounds check against IWL_MAX_TID_COUNT before dereferencing the array.

Affected products

• Linux: 4.9 — 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/03084a2c61838ce6a12f082025cbf9ed869f0492
• https://git.kernel.org/stable/c/0b5325a0771674f1d65618de7db3df9d49186a12
• https://git.kernel.org/stable/c/0e4c0d83267261cf67ec9690856edf4a56bb7dfc
• https://git.kernel.org/stable/c/0f690fd3b5535d110898b99ae6214f29c9060941
• https://git.kernel.org/stable/c/59f64c2839022f41a7867b38f9e38c185ff39283

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