---
id: CVE-2023-3268
title: >-
  An out of bounds (OOB) memory access flaw was found in the Linux kernel in
  relay_file_read_start_pos in kernel/relay.c in the relayfs
summary: >-
  An out of bounds (OOB) memory access flaw was found in the Linux kernel in
  relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could
  allow a local attacker to crash the system or leak kernel internal
  information.
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-125
  - CWE-125
vendor: linux
product: linux_kernel
affected:
  - linux_kernel < 6.4
  - debian_linux = 10.0
  - debian_linux = 11.0
  - debian_linux = 12.0
patched:
  - linux_kernel 6.4
published: '2023-06-16'
updated: '2026-08-24'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-3268'
references:
  - url: 'https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2'
    label: secalert@redhat.com
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ec16f1450f4936025a9bdf1a273affdb9732c1
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html'
    label: secalert@redhat.com
  - url: >-
      https://lore.kernel.org/lkml/1682238502-1892-1-git-send-email-yangpc%40wangsu.com/T/
    label: secalert@redhat.com
  - url: 'https://security.netapp.com/advisory/ntap-20230824-0006/'
    label: secalert@redhat.com
  - url: 'https://www.debian.org/security/2023/dsa-5448'
    label: secalert@redhat.com
  - url: 'https://www.debian.org/security/2023/dsa-5480'
    label: secalert@redhat.com
  - url: 'https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=43ec16f1450f4936025a9bdf1a273affdb9732c1
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://lore.kernel.org/lkml/1682238502-1892-1-git-send-email-yangpc%40wangsu.com/T/
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://security.netapp.com/advisory/ntap-20230824-0006/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2023/dsa-5448'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.debian.org/security/2023/dsa-5480'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00477
epssPercentile: 0.40212
ingestedAt: '2026-08-24T16:07:20.502Z'
---

## Overview

An out of bounds (OOB) memory access flaw was found in the Linux kernel in relay_file_read_start_pos in kernel/relay.c in the relayfs. This flaw could allow a local attacker to crash the system or leak kernel internal information.

## Affected

- `linux_kernel < 6.4`
- `debian_linux = 10.0`
- `debian_linux = 11.0`
- `debian_linux = 12.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.4`