---
id: CVE-2025-21842
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  amdkfd: properly free gang_ctx_bo when failed to init user queue

  The destructor of a gtt bo is declared as
  void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, …
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  amdkfd: properly free gang_ctx_bo when failed to init user queue

  The destructor of a gtt bo is declared as
  void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, …
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'
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.12, < 6.12.16'
  - 'linux_kernel >= 6.13, < 6.13.4'
  - linux_kernel = 6.14
patched:
  - linux_kernel 6.13.4
published: '2025-03-07'
updated: '2026-07-30'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-21842'
references:
  - url: 'https://git.kernel.org/stable/c/091a68c58c1bbd2ab7d05d1b32c1306394ec691d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a33f7f9660705fb2ecf3467b2c48965564f392ce'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/ae5ab1c1ae504f622cc1ff48830a9ed48428146d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
epss: 0.00237
epssPercentile: 0.13107
ingestedAt: '2026-07-30T06:53:10.460Z'
---

## Overview

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

amdkfd: properly free gang_ctx_bo when failed to init user queue

The destructor of a gtt bo is declared as
void amdgpu_amdkfd_free_gtt_mem(struct amdgpu_device *adev, void **mem_obj);
Which takes void** as the second parameter.

GCC allows passing void* to the function because void* can be implicitly
casted to any other types, so it can pass compiling.

However, passing this void* parameter into the function's
execution process(which expects void** and dereferencing void**)
will result in errors.

## Affected

- `linux_kernel >= 6.12, < 6.12.16`
- `linux_kernel >= 6.13, < 6.13.4`
- `linux_kernel = 6.14`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.13.4`