---
title: "CVE-2026-98166: Linux Kernel drm/ttm - Use After Free"
description: "Linux kernel drm/ttm contains a use-after-free caused by missing removal of swapped-out resources from bulk_move range in ttm_bo_swapout_cb(), letting attackers trigger system crashes or memory corruption after hibernation, exploit requires system suspend-then-hibernate usage."
url: https://panop.io/threat-heartbeat/CVE-2026-98166/
---

# CVE-2026-98166 Linux Kernel drm/ttm - Use After Free

Linux kernel drm/ttm contains a use-after-free caused by missing removal of swapped-out resources from bulk\_move range in ttm\_bo\_swapout\_cb(), letting attackers trigger system crashes or memory corruption after hibernation, exploit requires system suspend-then-hibernate usage.

CVSS base score 7.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.15% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-98166)

## Details

Type

Use After Free

Impact

Denial Of Service

CVSS vector

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

Published

6 October 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for drm/ttm bulk\_move resource removal.

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-2026-98166](https://nvd.nist.gov/vuln/detail/CVE-2026-98166)
- [https://git.kernel.org/stable/c/1169fe8c11ca45e3f91d59a73eb271d0ca8a7fb0](https://git.kernel.org/stable/c/1169fe8c11ca45e3f91d59a73eb271d0ca8a7fb0)
- [https://git.kernel.org/stable/c/3db7d7d583419f7b1f2e141e36418802dbb25cf8](https://git.kernel.org/stable/c/3db7d7d583419f7b1f2e141e36418802dbb25cf8)

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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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