---
id: CVE-2023-53504
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF

  ib_dealloc_device() should be called only after device cleanup
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF

  ib_dealloc_device() should be called only after device cleanup.  Fix the
  dealloc sequence.
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'
cwe:
  - CWE-416
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 6.3, < 6.4.11'
  - linux_kernel = 6.5
patched:
  - linux_kernel 6.4.11
published: '2025-10-01'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:41.393'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-53504'
references:
  - url: 'https://git.kernel.org/stable/c/5363fc488da579923edf6a2fdca3d3b651dd800b'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c95863f6d970ef968e7c1f3c481f72a4b0734654'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00157
epssPercentile: 0.04788
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:35:08.366404Z'
ingestedAt: '2026-10-15T22:48:25.404Z'
---

## Overview

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

RDMA/bnxt_re: Properly order ib_device_unalloc() to avoid UAF

ib_dealloc_device() should be called only after device cleanup.  Fix the
dealloc sequence.

## Affected

- `linux_kernel >= 6.3, < 6.4.11`
- `linux_kernel = 6.5`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.4.11`