CVE-2023-39197

Name: CVE-2023-39197
Creator: NVD / NIST
Published: 2024-01-23T03:15:11.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.98%

Last modified Jun 17, 2026

CVE-2023-39197 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.98% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.98%

57.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 2.6.26, < 5.4.251
Linux	Linux Kernel	>= 5.5, < 5.10.188
Linux	Linux Kernel	>= 5.11, < 5.15.121
Linux	Linux Kernel	>= 5.16, < 6.1.39
Linux	Linux Kernel	>= 6.2, < 6.3.13
Linux	Linux Kernel	>= 6.4, < 6.4.4
Fedoraproject	Fedora	38

References

https://access.redhat.com/security/cve/CVE-2023-39197Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218342Issue Tracking, Third Party Advisory
https://access.redhat.com/security/cve/CVE-2023-39197Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218342Issue Tracking, Third Party Advisory

Timeline

Published: Jan 23, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-39197?

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.

How severe is CVE-2023-39197?

CVE-2023-39197 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.98% probability of exploitation in the next 30 days.

How do I fix CVE-2023-39197?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-39197?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST