What’s Vulnerable › Vulnerabilities

CVE-2024-27434: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-17 · updated 2026-08-04

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: iwlwifi: mvm: don't set the MFP flag for the GTK The firmware doesn't need the MFP flag for the GTK, it can even make the firmware crash. in case the AP is configured with: group cipher TKIP and MFPC. We would send the GTK with cipher = TKIP and MFP which is of course not possible.

Affected products

• Linux kernel: from 6.2 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2 — fixed in 6.6.23, 6.7.11, 6.8.2

How to fix

Upgrade to a fixed version: Linux kernel 6.6.23, 6.7.11, 6.8.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715
• https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628
• https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8
• https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c
• https://git.kernel.org/stable/c/40405cbb20eb6541c603e7b3d54ade0a7be9d715
• https://git.kernel.org/stable/c/60f6d5fc84a9fd26528a24d8a267fc6a6698b628
• https://git.kernel.org/stable/c/b4f1b0b3b91762edd19bf9d3b2e4c3a0740501f8
• https://git.kernel.org/stable/c/e35f316bce9e5733c9826120c1838f4c447b2c4c

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