---
title: "CVE-2026-56906: Linux Kernel - Use After Free"
description: "Linux kernel contains a use-after-free caused by a race condition in ep_free of eventpoll.c, letting local attackers escalate privileges, exploit requires no additional execution privileges or user interaction."
url: https://panop.io/threat-heartbeat/CVE-2026-56906/
---

# CVE-2026-56906 Linux Kernel - Use After Free

Linux kernel contains a use-after-free caused by a race condition in ep\_free of eventpoll.c, letting local attackers escalate privileges, exploit requires no additional execution privileges or user interaction.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.05% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-56906)

## Details

Type

Use After Free

Impact

Privilege Escalation

CVSS vector

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

Published

6 October 2026

Updated

15 October 2026

Weakness

[CWE-362](https://cwe.mitre.org/data/definitions/362.html)

## Vendor fix

Update to the latest Linux kernel version.

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-2026-56906](https://nvd.nist.gov/vuln/detail/CVE-2026-56906)
- [https://source.android.com/docs/security/bulletin/pixel/2026/2026-10-01](https://source.android.com/docs/security/bulletin/pixel/2026/2026-10-01)

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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

Panop answers these inside your environment, for this CVE and every other finding.

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