---
title: "CVE-2026-89825: Linux kernel drm/panthor - Out of Bounds Read/Write"
description: "Linux kernel drm/panthor contains a bounds check vulnerability caused by improper 32-bit arithmetic in firmware control interface offset validation, letting attackers potentially cause out-of-bounds access, exploit requires crafted firmware with malicious offsets."
url: https://panop.io/threat-heartbeat/CVE-2026-89825/
---

# CVE-2026-89825 Linux kernel drm/panthor - Out of Bounds Read/Write

Linux kernel drm/panthor contains a bounds check vulnerability caused by improper 32-bit arithmetic in firmware control interface offset validation, letting attackers potentially cause out-of-bounds access, exploit requires crafted firmware with malicious offsets.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.18% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89825)

## Details

Type

Out of Bounds Read/Write

Impact

Denial Of Service, Information Disclosure

CVSS vector

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

Published

16 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for drm/panthor bounds checks.

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-2026-89825](https://nvd.nist.gov/vuln/detail/CVE-2026-89825)
- [https://git.kernel.org/stable/c/33ae55809aee9b4dca1d00cdee35b527f2bf8626](https://git.kernel.org/stable/c/33ae55809aee9b4dca1d00cdee35b527f2bf8626)
- [https://git.kernel.org/stable/c/3e5c7cddc0073eef6f9bb373189b11a969f1f6f6](https://git.kernel.org/stable/c/3e5c7cddc0073eef6f9bb373189b11a969f1f6f6)
- [https://git.kernel.org/stable/c/6a47f9fd2d970674ed9dedc52fc7ab76fd015785](https://git.kernel.org/stable/c/6a47f9fd2d970674ed9dedc52fc7ab76fd015785)
- [https://git.kernel.org/stable/c/80c9528661c774f899281c9a72011208ff39929e](https://git.kernel.org/stable/c/80c9528661c774f899281c9a72011208ff39929e)

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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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