# CVE-2026-105460: BlueZ btmon out-of-bounds read in HCI Return Link Keys

Source: https://junglewise.ai/threats/cve-2026-105460-a-flaw-was-found-in-bluez-an-out-of-bounds-read-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-105460 · Severity: medium · CVSS 5.5 · Published 2026-10-13

BlueZ is a Bluetooth protocol stack widely used in Linux systems. The btmon diagnostic tool crashes when processing maliciously crafted Bluetooth capture files with invalid link key counts. An attacker who tricks a user into opening a crafted btsnoop file can crash the tool, preventing Bluetooth debugging but not affecting the core Bluetooth daemon.

Vendors: [BlueZ](https://junglewise.ai/threats/vendors/bluez).

## Quick answers

**Is CVE-2026-105460 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-105460 being exploited in the wild.

**How severe is CVE-2026-105460?** Medium severity, with a CVSS score of 5.5, published 13 October 2026.

**Which products and versions are affected?** BlueZ btmon.

**Is there a fix for CVE-2026-105460?** No fixed version is recorded yet. Do not open untrusted btsnoop capture files with btmon. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-105460 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-105460?** Check whether you run BlueZ Btmon. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix


Do not open untrusted btsnoop capture files with btmon.

## Technical details

An out-of-bounds read vulnerability (CWE-125) exists in btmon's processing of HCI Return Link Keys events when a crafted btsnoop capture file specifies a link key count exceeding the actual packet data. The vulnerability is triggered via local user interaction—opening a malicious btsnoop file with btmon—and results in a denial-of-service crash rather than code execution.

## Affected products

- BlueZ btmon

## Timeline

- 2026-10-13: disclosed

## References

- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-105460](https://access.redhat.com/security/cve/CVE-2026-105460)