---
id: CVE-2023-53733
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode

  When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter
  operation done at u32_set_parms.
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode

  When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter
  operation done at u32_set_parms.
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
affected:
  - >-
    Linux >= d34e3e181395192d6d1f50dd97bd7854e04e33a4 <
    a9345793469b65ee5ba7b033239916c2a67d3dd4
  - >-
    Linux >= d34e3e181395192d6d1f50dd97bd7854e04e33a4 <
    025159ed118ba5145b241d574edadb0e00d3c20f
  - >-
    Linux >= d34e3e181395192d6d1f50dd97bd7854e04e33a4 <
    9cb36faedeafb9720ac236aeae2ea57091d90a09
  - Linux 4.7
published: '2025-10-24'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:47.800'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-53733'
references:
  - url: 'https://git.kernel.org/stable/c/025159ed118ba5145b241d574edadb0e00d3c20f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/9cb36faedeafb9720ac236aeae2ea57091d90a09'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a9345793469b65ee5ba7b033239916c2a67d3dd4'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00151
epssPercentile: 0.04201
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:36:55.863710Z'
ingestedAt: '2026-10-15T22:48:25.419Z'
---

## Overview

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

net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode

When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter
operation done at u32_set_parms.

## Remediation

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