What is CVE-2023-39197?

CVE-2023-39197 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2024-01-23.

How severe is CVE-2023-39197?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Out-of-bounds Read in Linux Kernel

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.

Vulnerability class: Buffer Overflow

Published 2024-01-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.010 (60.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

access.redhat.com/security/cve/CVE-2023-39197 (Third Party Advisory, vdb-entry)
RHBZ#2218342 (issue-tracking, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2023-39197?: CVE-2023-39197 is a medium-severity vulnerability in Linux Kernel, classified under Out-of-bounds Read. CVSS score: 4.0/10. Published 2024-01-23.
How severe is CVE-2023-39197?: Medium severity. CVSS v3 base score is 4.0 out of 10.