---
title: "CVE-2026-98999: Linux Kernel drm/xe - Use After Free"
description: "Linux kernel drm/xe contains a use-after-free caused by stale pinned_link list entry due to improper unpin handling in xe_bo_unpin_external and framebuffer unpin paths, letting attackers cause memory corruption, exploit requires kernel-level access."
url: https://panop.io/threat-heartbeat/CVE-2026-98999/
---

# CVE-2026-98999 Linux Kernel drm/xe - Use After Free

Linux kernel drm/xe contains a use-after-free caused by stale pinned\_link list entry due to improper unpin handling in xe\_bo\_unpin\_external and framebuffer unpin paths, letting attackers cause memory corruption, exploit requires kernel-level access.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.22% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98999)

## Details

Type

Use After Free

Impact

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

23 October 2026

Updated

25 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the patch ca58d36a1f93af586ee93b340c9f9fd81312cc01.

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-2026-98999](https://nvd.nist.gov/vuln/detail/CVE-2026-98999)
- [https://git.kernel.org/stable/c/3a11adcfd9a2de74d405bd3e8c4d7a1b328e4684](https://git.kernel.org/stable/c/3a11adcfd9a2de74d405bd3e8c4d7a1b328e4684)
- [https://git.kernel.org/stable/c/b3eaff982839e5c22912d604cd8e7748cece8d63](https://git.kernel.org/stable/c/b3eaff982839e5c22912d604cd8e7748cece8d63)
- [https://git.kernel.org/stable/c/cf238c067eaae1cbfb00738e29219b9568d2313e](https://git.kernel.org/stable/c/cf238c067eaae1cbfb00738e29219b9568d2313e)

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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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