Bluetooth: hci_aml: validate firmware segment lengths (CVE-2026-80759) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80759

Bluetooth: hci_aml: validate firmware segment lengths

Answer in brief

CVE-2026-80759 records a Unknown severity vulnerability in Bluetooth: hci_aml: validate firmware segment lengths. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 4, 2026Updated Sep 4, 2026Source checked Sep 4, 2026First seen by HOL Sep 4, 2026Material review Sep 4, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=37bac77e4649e8158698a60addc22ec4faf5649a <7733b01ed13685773ccda91035a46f87d4cfef7c \|\| >=37bac77e4649e8158698a60addc22ec4faf5649a <e1534d49a7b8ba728e84b020f6d802aa1cb759d9 \|\| >=37bac77e4649e8158698a60addc22ec4faf5649a <6c70253462902d835e843b470f74aa816d60af80 \|\| >=37bac77e4649e8158698a60addc22ec4faf5649a <2763b8bcb504e30ec955474f51b99ce42fc62f3b \|\| >=37bac77e4649e8158698a60addc22ec4faf5649a <2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4	7733b01ed13685773ccda91035a46f87d4cfef7c, e1534d49a7b8ba728e84b020f6d802aa1cb759d9, 6c70253462902d835e843b470f74aa816d60af80, 2763b8bcb504e30ec955474f51b99ce42fc62f3b, 2bf6b9baca9372ea51b6d0f2820dc9bf29a83ef4
Linux/Linuxgeneric	6.12	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to 7733b01ed13685773ccda91035a46f87d4cfef7c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 4, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 4, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.