CVE-2026-90374 PUBLISHED

wifi: mt76: mt7996: validate RX band_idx before dereferencing phys[]

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: validate RX band_idx before dereferencing phys[]

band_idx comes from a 2-bit descriptor field (0-3) and was used directly to index dev->mt76.phys[] (size __MT_MAX_BAND == 3) and dereference the result. A corrupt or reserved descriptor value could index out of bounds or hit a NULL phy on parts with fewer bands. Reject invalid band indices, mirroring mt7996_rx_get_wcid().

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 98686cd21624c75a043e96812beadddf4f6f48e5 to 535091c587268cc783608642838a655d828eefdd (excl.)
  • affected from 98686cd21624c75a043e96812beadddf4f6f48e5 to 0f53ece876e1f3bbb3e18f48afc4af1ee967b16c (excl.)
  • affected from 98686cd21624c75a043e96812beadddf4f6f48e5 to b1c5cf8903bec5476a2233b4e45287b9a2213e02 (excl.)
  • affected from 98686cd21624c75a043e96812beadddf4f6f48e5 to 2243778a5fae8329ab5f18e7adcd7e03b911a1b7 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.2 is affected
  • unaffected from 0 to 6.2 (excl.)
  • 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