---
id: "CVE-2026-99261"
kind: "vulnerability"
aliases: ["CVE-2026-99261"]
title: "Linux kernel: AMD GPU driver fence slot error during buffer eviction"
severity: "unknown"
cvss: null
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["amdgpu", "drm", "linux-kernel", "runtime"]
not_affected_if: ["amdgpu-not-loaded", "no-amd-gpu"]
published_at: "2026-11-03T12:17:33+00:00"
first_seen_at: "2026-11-03T12:20:39+00:00"
updated_at: "2026-11-03T12:22:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-99261", "first_seen_at": "2026-11-03T12:20:39+00:00"}]
---

# Linux kernel: AMD GPU driver fence slot error during buffer eviction

The Linux kernel's AMD GPU (amdgpu) driver miscounted reservation fence slots when evicting per-VM buffer objects for user queues, causing a move overflow and a failed eviction fence add. The sources do not state what an attacker gets from this flaw.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `uname -r` and compare against the kernel versions named in the vendor advisory
- Check whether the `amdgpu` driver is loaded with `lsmod | grep amdgpu`

## Timeline

- 2026-11-03T12:20:39+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-99261

## From the sources

In the Linux kernel, the following vulnerability has been resolved:

drm/amdgpu: correct reservation fence slots for userq per-vm BOs eviction

It fixes both the move overflow and the eviction fence add for
evicting these per-vm BOs.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_