---
title: "CVE-2026-90288: Linux kernel phy renesas rcar-gen2 - Use After Free"
description: "Linux kernel phy renesas rcar-gen2 contains a double free vulnerability caused by redundant of_node_put call on phy creation failure, letting kernel processes cause memory corruption, exploit requires kernel code execution."
url: https://panop.io/threat-heartbeat/CVE-2026-90288/
---

# CVE-2026-90288 Linux kernel phy renesas rcar-gen2 - Use After Free

Linux kernel phy renesas rcar-gen2 contains a double free vulnerability caused by redundant of\_node\_put call on phy creation failure, letting kernel processes cause memory corruption, exploit requires kernel code execution.

CVSS base score 7.4 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.15% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90288)

## Details

Type

Use After Free

Impact

Denial Of Service, Privilege Escalation

CVSS vector

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

Published

17 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix.

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-2026-90288](https://nvd.nist.gov/vuln/detail/CVE-2026-90288)
- [https://git.kernel.org/stable/c/5374f3d53376d35085e0727c8c1b945bf7123996](https://git.kernel.org/stable/c/5374f3d53376d35085e0727c8c1b945bf7123996)
- [https://git.kernel.org/stable/c/b780b8929c759cfa7a892d58625a5ad46cb1cbd2](https://git.kernel.org/stable/c/b780b8929c759cfa7a892d58625a5ad46cb1cbd2)

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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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