---
id: CVE-2026-68245
title: 'drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()

  The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only
  valid while the lock is still bein…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c <
    fe16a7e5336ae888751984e30c451fbf7cfa5df7
  - >-
    Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c <
    1173190412fb9d12e7efce76734118d9712ff970
  - >-
    Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c <
    5d5fb9124a2bba96a7807086d8fe0f7ce810d546
  - >-
    Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c <
    04cc4aa3617b0ed67e859f91f09de5d896a46f3a
  - Linux 6.9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-16T15:46:07.633489Z'
published: '2026-08-10'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:53:04.514Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-68245'
references:
  - url: 'https://git.kernel.org/stable/c/fe16a7e5336ae888751984e30c451fbf7cfa5df7'
  - url: 'https://git.kernel.org/stable/c/1173190412fb9d12e7efce76734118d9712ff970'
  - url: 'https://git.kernel.org/stable/c/5d5fb9124a2bba96a7807086d8fe0f7ce810d546'
  - url: 'https://git.kernel.org/stable/c/04cc4aa3617b0ed67e859f91f09de5d896a46f3a'
tags:
  - cve.org
epss: 0.00163
epssPercentile: 0.05165
ingestedAt: '2026-10-16T17:24:46.850Z'
---

## Overview

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

drm/amdgpu: fix lifetime issue of amdgpu_vm_get_task_info_pasid()

The vm pointer returned from amdgpu_vm_get_vm_from_pasid() is only
valid while the lock is still being held. Once xa_unlock_irqrestore is
called and returned, the pointer is no longer under lock and is subject
to modification. Since, the caller still dereferences vm->task_info in
amdgpu_vm_get_task_info_vm() after the lock is removed, this causes a
use after unlock problem.

Remove the lifetime issue present in amdgpu_vm_get_task_info_pasid()
through removing the amdgpu_vm_get_vm_from_pasid() function from
amdgpu_vm.c and making the relevant code inline to hold the lock while
it is still in use.

(cherry picked from commit 9d01579f3f868b333acc901815972685989092c7)

## Affected

- `Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c < fe16a7e5336ae888751984e30c451fbf7cfa5df7`
- `Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c < 1173190412fb9d12e7efce76734118d9712ff970`
- `Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c < 5d5fb9124a2bba96a7807086d8fe0f7ce810d546`
- `Linux >= b8f67b9ddf4f8fe6dd536590712b5912ad78f99c < 04cc4aa3617b0ed67e859f91f09de5d896a46f3a`
- `Linux 6.9`

## Remediation

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