CVE-2026-80759 PUBLISHED

Bluetooth: hci_aml: validate firmware segment lengths

Assigner: Linux
Reserved: 26.08.2026 Published: 04.09.2026 Updated: 04.09.2026

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: hci_aml: validate firmware segment lengths

aml_download_firmware() reads two lengths from the firmware header and uses them to build pointers before checking that the header and segment data are present. A truncated or inconsistent firmware image can make the driver read past firmware->data while constructing TCI commands.

Reject images shorter than the header and ensure that the ICCM and DCCM ranges fit within the loaded firmware before downloading either segment.

Product Status

Vendor Linux
Product Linux
Versions Default: unaffected
  • affected from 37bac77e4649e8158698a60addc22ec4faf5649a to 7733b01ed13685773ccda91035a46f87d4cfef7c (excl.)
  • affected from 37bac77e4649e8158698a60addc22ec4faf5649a to e1534d49a7b8ba728e84b020f6d802aa1cb759d9 (excl.)
  • affected from 37bac77e4649e8158698a60addc22ec4faf5649a to 6c70253462902d835e843b470f74aa816d60af80 (excl.)
  • affected from 37bac77e4649e8158698a60addc22ec4faf5649a to 2763b8bcb504e30ec955474f51b99ce42fc62f3b (excl.)
  • affected from 37bac77e4649e8158698a60addc22ec4faf5649a to 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4 (excl.)
Vendor Linux
Product Linux
Versions Default: affected
  • Version 6.12 is affected
  • unaffected from 0 to 6.12 (excl.)
  • unaffected from 6.12.106 to 6.12.* (incl.)
  • unaffected from 6.18.47 to 6.18.* (incl.)
  • unaffected from 7.1.11 to 7.1.* (incl.)
  • unaffected from 7.2.1 to 7.2.* (incl.)
  • unaffected from 7.3-rc1 to * (incl.)

References