---
id: CVE-2026-74258
title: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Guard __get_user acesss with access_ok for uprobe_multi data

  As reported by sashiko [1] we need to use access_ok to check the user
  space data bounds before we use…
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  bpf: Guard __get_user acesss with access_ok for uprobe_multi data

  As reported by sashiko [1] we need to use access_ok to check the user
  space data bounds before we use…
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 >= 89ae89f53d201143560f1e9ed4bfa62eee34f88e <
    2c387db784293256d35fd3d438f577cc82bb823d
  - >-
    Linux >= 89ae89f53d201143560f1e9ed4bfa62eee34f88e <
    a9f1395028c2bbe18e57864cc355c11faff488cb
  - >-
    Linux >= 89ae89f53d201143560f1e9ed4bfa62eee34f88e <
    c6d51ad36490013ee9df94a372d3bf794bd304d1
  - >-
    Linux >= 89ae89f53d201143560f1e9ed4bfa62eee34f88e <
    4d87a251d45b4a95eb4c0abcfab809c9f231258a
  - Linux 6.6
published: '2026-08-15'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T14:17:18.193'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74258'
references:
  - url: 'https://git.kernel.org/stable/c/2c387db784293256d35fd3d438f577cc82bb823d'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/4d87a251d45b4a95eb4c0abcfab809c9f231258a'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/a9f1395028c2bbe18e57864cc355c11faff488cb'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
  - url: 'https://git.kernel.org/stable/c/c6d51ad36490013ee9df94a372d3bf794bd304d1'
    label: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
tags:
  - nvd
  - cve.org
epss: 0.00163
epssPercentile: 0.05965
ingestedAt: '2026-09-21T13:37:22.841Z'
---

## Overview

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

bpf: Guard __get_user acesss with access_ok for uprobe_multi data

As reported by sashiko [1] we need to use access_ok to check the user
space data bounds before we use __get-user to get it.

[1] https://lore.kernel.org/bpf/20260610145235.CB1441F00893@smtp.kernel.org/

## Remediation

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