---
title: "CVE-2026-89801: Linux kernel drm/nouveau/uvmm - Use After Free"
description: "Linux kernel drm/nouveau/uvmm contains a use-after-free caused by premature region free on failed OP_UNMAP_SPARSE in nouveau_uvmm_bind_job_submit(), letting attackers cause memory corruption, exploit requires triggering drm_gpuvm_sm_unmap_ops_create() failure."
url: https://panop.io/threat-heartbeat/CVE-2026-89801/
---

# CVE-2026-89801 Linux kernel drm/nouveau/uvmm - Use After Free

Linux kernel drm/nouveau/uvmm contains a use-after-free caused by premature region free on failed OP\_UNMAP\_SPARSE in nouveau\_uvmm\_bind\_job\_submit(), letting attackers cause memory corruption, exploit requires triggering drm\_gpuvm\_sm\_unmap\_ops\_create() failure.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.16% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89801)

## Details

Type

Use After Free

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/nouveau/uvmm.

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-2026-89801](https://nvd.nist.gov/vuln/detail/CVE-2026-89801)
- [https://git.kernel.org/stable/c/ccf930812f23b8259ef64fd3394d53b093e4651a](https://git.kernel.org/stable/c/ccf930812f23b8259ef64fd3394d53b093e4651a)
- [https://git.kernel.org/stable/c/24c25b182d17d1bdfde0088c96bdf6f93e8f46bc](https://git.kernel.org/stable/c/24c25b182d17d1bdfde0088c96bdf6f93e8f46bc)
- [https://git.kernel.org/stable/c/4083d24c2636fde7b18076115af52820d203bc57](https://git.kernel.org/stable/c/4083d24c2636fde7b18076115af52820d203bc57)
- [https://git.kernel.org/stable/c/88114e3a96582882e63b2f73aa7a5a9cf0d5073c](https://git.kernel.org/stable/c/88114e3a96582882e63b2f73aa7a5a9cf0d5073c)
- [https://git.kernel.org/stable/c/ba42d8a1c2c7629c61914df11a7d63ac77449ffb](https://git.kernel.org/stable/c/ba42d8a1c2c7629c61914df11a7d63ac77449ffb)

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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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