---
title: "CVE-2026-99014: Linux Kernel Bluetooth - Use After Free"
description: "Linux kernel contains a use-after-free vulnerability in Bluetooth hci_sync during scan setup caused by improper synchronization of command skb lifetime, letting attackers cause memory corruption or kernel crash, exploit requires local access."
url: https://panop.io/threat-heartbeat/CVE-2026-99014/
---

# CVE-2026-99014 Linux Kernel Bluetooth - Use After Free

Linux kernel contains a use-after-free vulnerability in Bluetooth hci\_sync during scan setup caused by improper synchronization of command skb lifetime, letting attackers cause memory corruption or kernel crash, exploit requires local access.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.21% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-99014)

## Details

Type

Use After Free

Impact

Denial Of Service, Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

23 October 2026

Updated

25 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for hci\_sync command skb lifetime.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-99014](https://nvd.nist.gov/vuln/detail/CVE-2026-99014)
- [https://git.kernel.org/stable/c/762850c203fab1190ad6a3de41cd51920b22236d](https://git.kernel.org/stable/c/762850c203fab1190ad6a3de41cd51920b22236d)
- [https://git.kernel.org/stable/c/7db33b36213a3a1a40940c009ddac30670b55922](https://git.kernel.org/stable/c/7db33b36213a3a1a40940c009ddac30670b55922)
- [https://git.kernel.org/stable/c/9af12272061d206af8bc3e40215cb694421ab73a](https://git.kernel.org/stable/c/9af12272061d206af8bc3e40215cb694421ab73a)
- [https://git.kernel.org/stable/c/f01cbddfb4273fcc9a786d13b0a2525029023605](https://git.kernel.org/stable/c/f01cbddfb4273fcc9a786d13b0a2525029023605)
- [https://git.kernel.org/stable/c/119ba8070b3f112dd36c897f4f70ea5bb7d370b8](https://git.kernel.org/stable/c/119ba8070b3f112dd36c897f4f70ea5bb7d370b8)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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