CVE-2026-90370 PUBLISHED

wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config

Assigner: Linux
Reserved: 11.09.2026 Published: 17.09.2026 Updated: 17.09.2026

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.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 5d33053be609abfcfa9f5ca75d5554f2109aa40b to 3106f62809d45c1e6aadfad1f4d7c3f74cd53a96 (excl.)
  • affected from 5d33053be609abfcfa9f5ca75d5554f2109aa40b to 39aa6b853b6d69dd1fee3507efdb3c277b7c53e6 (excl.)
  • affected from 5d33053be609abfcfa9f5ca75d5554f2109aa40b to d0bb2189ade617e624f3c8f444ebb05f59bb2524 (excl.)
  • affected from 5d33053be609abfcfa9f5ca75d5554f2109aa40b to 93eaddfdd35aa6bfe570c087db4e97fb9d8a791a (excl.)
  • affected from 5d33053be609abfcfa9f5ca75d5554f2109aa40b to 44af52467e72094351a362bf69effd52f1d9c186 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.3 is affected
  • unaffected from 0 to 6.3 (excl.)
  • unaffected from 6.6.157 to 6.6.* (incl.)
  • unaffected from 6.12.110 to 6.12.* (incl.)
  • unaffected from 6.18.52 to 6.18.* (incl.)
  • unaffected from 7.2.6 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References