---
id: CVE-2023-6931
title: >-
  A heap out-of-bounds write vulnerability in the Linux kernel's Performance
  Events system component can be exploited to achieve local privilege
  escalation.




  A perf_event's read_size can overflow, leading to an heap out-of-bounds
  increme…
summary: >-
  A heap out-of-bounds write vulnerability in the Linux kernel's Performance
  Events system component can be exploited to achieve local privilege
  escalation.




  A perf_event's read_size can overflow, leading to an heap out-of-bounds
  increme…
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-787
  - CWE-787
vendor: linux
product: linux_kernel
affected:
  - 'linux_kernel >= 4.3, < 6.7'
  - debian_linux = 10.0
patched:
  - linux_kernel 6.7
published: '2023-12-19'
updated: '2026-08-17'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-6931'
references:
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b
    label: cve-coordination@google.com
  - url: 'https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html'
    label: cve-coordination@google.com
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html'
    label: cve-coordination@google.com
  - url: >-
      https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=382c27f4ed28f803b1f1473ac2d8db0afc795a1b
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://kernel.dance/382c27f4ed28f803b1f1473ac2d8db0afc795a1b'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://lists.debian.org/debian-lts-announce/2024/01/msg00005.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-265688.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-398330.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-613116.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
  - url: 'https://cert-portal.siemens.com/productcert/html/ssa-794697.html'
    label: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
tags:
  - nvd
  - exploit-available
epss: 0.00715
epssPercentile: 0.52312
ingestedAt: '2026-08-17T14:55:59.064Z'
exploits:
  github: 2
  githubRepos:
    - 'https://github.com/K0n9-log/CVE-2023-6931'
    - 'https://github.com/Yutori-Natsu/cve-2023-6931-pipa'
  checkedAt: '2026-09-24T07:52:50.366Z'
exploitAvailable: true
---

## Overview

A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation.



A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group().



We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b.

## Affected

- `linux_kernel >= 4.3, < 6.7`
- `debian_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `linux_kernel 6.7`