What’s Vulnerable › Vulnerabilities

CVE-2026-90370: wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config

• 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: 2026-09-17 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config The response TLV loop advanced by tlv->len without a minimum, so a theoretical firmware response containing a zero-length TLV could spin forever, hanging the CPU during device probe. The u32 payload was also read without bounds checking. Reject a short fixed field, stop on a TLV whose length underruns the header or overruns the skb.

Affected products

• Linux kernel: 6.3 — fixed in 7.3

How to fix

Upgrade to a fixed version: Linux kernel 7.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3106f62809d45c1e6aadfad1f4d7c3f74cd53a96
• https://git.kernel.org/stable/c/39aa6b853b6d69dd1fee3507efdb3c277b7c53e6
• https://git.kernel.org/stable/c/44af52467e72094351a362bf69effd52f1d9c186
• https://git.kernel.org/stable/c/93eaddfdd35aa6bfe570c087db4e97fb9d8a791a
• https://git.kernel.org/stable/c/d0bb2189ade617e624f3c8f444ebb05f59bb2524

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