---
id: CVE-2023-53080
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xsk: Add missing overflow check in xdp_umem_reg

  The number of chunks can overflow u32
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  xsk: Add missing overflow check in xdp_umem_reg

  The number of chunks can overflow u32. Make sure to return -EINVAL on
  overflow. Also remove a redundant u32 cast assign…
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 >= 4.18, < 5.10.177'
  - 'linux_kernel >= 5.11, < 5.15.105'
  - 'linux_kernel >= 5.16, < 6.1.22'
  - 'linux_kernel >= 6.2, < 6.2.9'
  - linux_kernel = 6.3
patched:
  - linux_kernel 6.2.9
published: '2025-05-02'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T22:17:36.317'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-53080'
references:
  - url: 'https://git.kernel.org/stable/c/3cfc3564411acf96bf2fb791f706a1aa4f872c1d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/580634b03a55f04a3c1968bcbd97736c079c6601'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a069909acc4435eeb41d05ccc03baa447cc01b7e'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/bb2e3bfb2a79db0c2057c6f701b782954394c67f'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c7df4813b149362248d6ef7be41a311e27bf75fe'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00227
epssPercentile: 0.13301
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T21:33:24.637741Z'
ingestedAt: '2026-10-15T22:48:25.387Z'
---

## Overview

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

xsk: Add missing overflow check in xdp_umem_reg

The number of chunks can overflow u32. Make sure to return -EINVAL on
overflow. Also remove a redundant u32 cast assigning umem->npgs.

## Affected

- `linux_kernel >= 4.18, < 5.10.177`
- `linux_kernel >= 5.11, < 5.15.105`
- `linux_kernel >= 5.16, < 6.1.22`
- `linux_kernel >= 6.2, < 6.2.9`
- `linux_kernel = 6.3`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.2.9`