CVE-2023-3772

Name: CVE-2023-3772
Creator: NVD / NIST
Published: 2023-07-25T16:15:11.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.45%

Last modified Jun 17, 2026

CVE-2023-3772 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.. EPSS estimates a 0.45% chance of exploitation in the next 30 days.

Description

A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.

Metrics

CVSS 3.1

4.4/10

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

EPSS Probability

0.45%

36.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux For Real Time	8.0
Redhat	Enterprise Linux For Real Time For Nfv	8.0
Fedoraproject	Fedora	All versions
Linux	Linux Kernel	All versions
Debian	Debian Linux	10.0
Debian	Debian Linux	12.0

References

https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0412
https://access.redhat.com/errata/RHSA-2024:0575
https://access.redhat.com/security/cve/CVE-2023-3772Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218943Issue Tracking, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/08/10/1
http://www.openwall.com/lists/oss-security/2023/08/10/3
https://access.redhat.com/errata/RHSA-2023:6583Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077Third Party Advisory
https://access.redhat.com/errata/RHSA-2024:0412
https://access.redhat.com/errata/RHSA-2024:0575
https://access.redhat.com/security/cve/CVE-2023-3772Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218943Issue Tracking, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html
https://www.debian.org/security/2023/dsa-5492

Timeline

Published: Jul 25, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-3772?

How severe is CVE-2023-3772?

CVE-2023-3772 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.45% probability of exploitation in the next 30 days.

How do I fix CVE-2023-3772?

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-2023-3772?

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

Scan your code now

Source: NVD / NIST