---
id: CVE-2026-31462
title: 'drm/amdgpu: prevent immediate PASID reuse case'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: prevent immediate PASID reuse case

  PASID resue could cause interrupt issue when process
  immediately runs into hw state left by previous
  process exited with…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 02208441cc3a5110191996bb129db39ff10e7395 <
    f69491478e3de0e3c6aac2ee89b3cda3f2471301
  - >-
    Linux >= 02208441cc3a5110191996bb129db39ff10e7395 <
    c0b3882836de8ac991b626823966f385555bbcff
  - >-
    Linux >= 02208441cc3a5110191996bb129db39ff10e7395 <
    51ccaf0e30c303149244c34820def83d74c86288
  - >-
    Linux >= 02208441cc3a5110191996bb129db39ff10e7395 <
    9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b
  - >-
    Linux >= 02208441cc3a5110191996bb129db39ff10e7395 <
    14b81abe7bdc25f8097906fc2f91276ffedb2d26
  - Linux 4.15
published: '2026-04-22'
updated: '2026-10-21'
sourceUpdated: '2026-10-21T12:39:17.994Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-31462'
references:
  - url: 'https://git.kernel.org/stable/c/f69491478e3de0e3c6aac2ee89b3cda3f2471301'
  - url: 'https://git.kernel.org/stable/c/c0b3882836de8ac991b626823966f385555bbcff'
  - url: 'https://git.kernel.org/stable/c/51ccaf0e30c303149244c34820def83d74c86288'
  - url: 'https://git.kernel.org/stable/c/9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b'
  - url: 'https://git.kernel.org/stable/c/14b81abe7bdc25f8097906fc2f91276ffedb2d26'
tags:
  - cve.org
epss: 0.00122
epssPercentile: 0.01819
ingestedAt: '2026-10-21T12:48:53.666Z'
---

## Overview

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

drm/amdgpu: prevent immediate PASID reuse case

PASID resue could cause interrupt issue when process
immediately runs into hw state left by previous
process exited with the same PASID, it's possible that
page faults are still pending in the IH ring buffer when
the process exits and frees up its PASID. To prevent the
case, it uses idr cyclic allocator same as kernel pid's.

(cherry picked from commit 8f1de51f49be692de137c8525106e0fce2d1912d)

## Affected

- `Linux >= 02208441cc3a5110191996bb129db39ff10e7395 < f69491478e3de0e3c6aac2ee89b3cda3f2471301`
- `Linux >= 02208441cc3a5110191996bb129db39ff10e7395 < c0b3882836de8ac991b626823966f385555bbcff`
- `Linux >= 02208441cc3a5110191996bb129db39ff10e7395 < 51ccaf0e30c303149244c34820def83d74c86288`
- `Linux >= 02208441cc3a5110191996bb129db39ff10e7395 < 9e5ebfe99b223bb0eb9c50a125c9c02f4ef4c71b`
- `Linux >= 02208441cc3a5110191996bb129db39ff10e7395 < 14b81abe7bdc25f8097906fc2f91276ffedb2d26`
- `Linux 4.15`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.