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Vulnerability record · CVE-2023-3772 · published 25 July 2023

CVE-2023-3772: Redhat enterprise linux null pointer dereference vulnerability

Redhat · Enterprise Linux

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.

4.4 CVSS 3.1 Medium EPSS 0.45% · top 62.7% CWE-476 · NULL pointer dereference
4.4CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
19References
17 Jun 2026Last modified by NVD

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.

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2023:6583 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077 Third 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-2023-3772 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218943 Issue TrackingThird 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-2023:6583 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:6901 Third Party Advisory
https://access.redhat.com/errata/RHSA-2023:7077 Third 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-2023-3772 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2218943 Issue TrackingThird 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

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Source: NIST National Vulnerability Database (record CVE-2023-3772), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.