---
id: CVE-2026-98910
title: 'drm/amdkfd: Unwind debug trap enable on copy_to_user failure'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  drm/amdkfd: Unwind debug trap enable on copy_to_user failure

  If kfd_dbg_trap_enable() fails while copying runtime_info to userspace,
  it had already activated the trap,…
severity: none
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 <
    641be20110cdfb6d921605adb42a764a0fccac54
  - >-
    Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 <
    656a40bdc20def58790b8512e6000195436d8855
  - >-
    Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 <
    1b39f46eec2f907417d4955bb88434170f94a8d8
  - >-
    Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 <
    01112e241e37f9ac98b6f418d93ce2e0b87b7ee0
  - Linux 6.5
published: '2026-10-23'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T06:56:40.297Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-98910'
references:
  - url: 'https://git.kernel.org/stable/c/641be20110cdfb6d921605adb42a764a0fccac54'
  - url: 'https://git.kernel.org/stable/c/656a40bdc20def58790b8512e6000195436d8855'
  - url: 'https://git.kernel.org/stable/c/1b39f46eec2f907417d4955bb88434170f94a8d8'
  - url: 'https://git.kernel.org/stable/c/01112e241e37f9ac98b6f418d93ce2e0b87b7ee0'
tags:
  - cve.org
epss: 0.00174
epssPercentile: 0.06843
ingestedAt: '2026-10-23T13:24:55.573Z'
---

## Overview

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

drm/amdkfd: Unwind debug trap enable on copy_to_user failure

If kfd_dbg_trap_enable() fails while copying runtime_info to userspace,
it had already activated the trap, set debug_trap_enabled, taken an extra
process reference, and opened the debug event file. Return -EFAULT without
unwinding that state, leaving inconsistent trap state and a refcount
imbalance that could break later DISABLE/ENABLE.

On copy_to_user failure, deactivate the trap and undo the rest of the
enable setup before returning.

## Affected

- `Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 < 641be20110cdfb6d921605adb42a764a0fccac54`
- `Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 < 656a40bdc20def58790b8512e6000195436d8855`
- `Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 < 1b39f46eec2f907417d4955bb88434170f94a8d8`
- `Linux >= 0ab2d7532b05a3e7c06fd3b0c8bd6b46c1dfb508 < 01112e241e37f9ac98b6f418d93ce2e0b87b7ee0`
- `Linux 6.5`

## Remediation

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