CVE-2023-3772
Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()
CVSS Score
5.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-476 |
| Vendor | red hat |
| Product | red hat enterprise linux 8 |
| Published | Jul 25, 2023 |
| Last Updated | Nov 7, 2025 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 8.8 Extended Update Support
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected Red Hat / Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
All versions affected Red Hat / Red Hat Enterprise Linux 6
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 7
All versions affected Red Hat / Red Hat Enterprise Linux 9
All versions affected References
access.redhat.com: https://access.redhat.com/errata/RHSA-2023:6583 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:6901 access.redhat.com: https://access.redhat.com/errata/RHSA-2023:7077 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0412 access.redhat.com: https://access.redhat.com/errata/RHSA-2024:0575 access.redhat.com: https://access.redhat.com/security/cve/CVE-2023-3772 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2218943 openwall.com: http://www.openwall.com/lists/oss-security/2023/08/10/1 openwall.com: http://www.openwall.com/lists/oss-security/2023/08/10/3 lists.debian.org: https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html lists.debian.org: https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html debian.org: https://www.debian.org/security/2023/dsa-5492
Credits
Red Hat would like to thank Lin Ma (ZJU & Ant Security Light-Year Lab) for reporting this issue.