---
title: "CVE-2026-80914: Linux Kernel Bluetooth ISO - Use After Free"
description: "Linux kernel Bluetooth ISO subsystem contains a use-after-free vulnerability caused by improper handling of listener socket references in iso_conn_ready(), letting attackers cause memory corruption or system instability, exploit requires concurrent socket closure."
url: https://panop.io/threat-heartbeat/CVE-2026-80914/
---

# CVE-2026-80914 Linux Kernel Bluetooth ISO - Use After Free

Linux kernel Bluetooth ISO subsystem contains a use-after-free vulnerability caused by improper handling of listener socket references in iso\_conn\_ready(), letting attackers cause memory corruption or system instability, exploit requires concurrent socket closure.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.23% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-80914)

## Details

Type

Use After Free

Impact

Denial Of Service, Remote Code Execution

CVSS vector

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

Published

9 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for iso\_conn\_ready() use-after-free.

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-2026-80914](https://nvd.nist.gov/vuln/detail/CVE-2026-80914)
- [https://git.kernel.org/stable/c/2387cd06a2c0b416f05028b02bba1089f54c28d9](https://git.kernel.org/stable/c/2387cd06a2c0b416f05028b02bba1089f54c28d9)
- [https://git.kernel.org/stable/c/49fd7116f76b860b230843700fb7423ab5331e1f](https://git.kernel.org/stable/c/49fd7116f76b860b230843700fb7423ab5331e1f)
- [https://git.kernel.org/stable/c/560bef609fa5992745929e8d7d458b9d88dd2830](https://git.kernel.org/stable/c/560bef609fa5992745929e8d7d458b9d88dd2830)
- [https://git.kernel.org/stable/c/1702f12cf59a1c3b670eb6bb4a4d6fcccf07e3b8](https://git.kernel.org/stable/c/1702f12cf59a1c3b670eb6bb4a4d6fcccf07e3b8)
- [https://git.kernel.org/stable/c/d47b8f8c02a3d3f282693e5a4ff1f6b4b00518de](https://git.kernel.org/stable/c/d47b8f8c02a3d3f282693e5a4ff1f6b4b00518de)
- [https://git.kernel.org/stable/c/03288b7447c9e572f8ab82fc29cfb4ca719ab210](https://git.kernel.org/stable/c/03288b7447c9e572f8ab82fc29cfb4ca719ab210)

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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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