---
id: CVE-2023-39197
title: 'Kernel: dccp: conntrack out-of-bounds read in nf_conntrack_dccp_packet()'
summary: >-
  An out-of-bounds read vulnerability was found in Netfilter Connection Tracking
  (conntrack) in the Linux kernel. This flaw allows a remote user to disclose
  sensitive information via the DCCP protocol.
severity: medium
cvss: 4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-125
vendor: Red Hat
product: kernel
affected:
  - kernel
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
  - kernel
  - kernel-rt
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2025-05-08T15:53:09.997061Z'
published: '2024-01-23'
updated: '2026-11-07'
sourceUpdated: '2026-11-07T13:41:48.692Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2023-39197'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2023-39197'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2218342'
    label: RHBZ#2218342
tags:
  - cve.org
epss: 0.00976
epssPercentile: 0.62336
ingestedAt: '2026-11-07T14:18:21.470Z'
---

## Overview

An out-of-bounds read vulnerability was found in Netfilter Connection Tracking (conntrack) in the Linux kernel. This flaw allows a remote user to disclose sensitive information via the DCCP protocol.

## Affected

- `kernel`
- `kernel`
- `kernel-rt`
- `kernel`
- `kernel-rt`
- `kernel`
- `kernel-rt`

## Remediation

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