Security readout for executives and security teams
CVE-2023-3772 is a Linux kernel crash bug in the XFRM packet transformation subsystem. A user with CAP_NET_ADMIN privileges could trigger a NULL pointer dereference and cause denial of service. It is not described as data theft or code execution in the supplied sources. Exposure is most relevant on affected Red Hat Enterprise Linux kernel or kernel-rt builds, especially systems where users, services, or containers receive CAP_NET_ADMIN. Systems that do not grant that capability broadly have lower practical exposure. Treat this as a moderate patching and hardening item. It can crash affected systems but needs local privileged capability. Prioritize shared hosts, virtualization nodes, and container platforms where CAP_NET_ADMIN may be delegated. Mitigation focus: Check vendor advisories for the exact fixed kernel packages for each platform.; Prioritize updates on hosts granting CAP_NET_ADMIN to containers or non-admin workloads.; Limit CAP_NET_ADMIN assignment to workloads with a documented operational need..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-476: Exact CWE lookup
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Open ATT&CK lookupCVE-2023-3772 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H1.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- RHSA-2023:6583CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:6901CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2023:7077CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2024:0412CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2024:0575CVE reference · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2023-3772CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2218943CVE reference · issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.htmlCVE reference · x_transferred
- https://lists.debian.org/debian-lts-announce/2024/01/msg00004.htmlCVE reference · x_transferred
- https://www.debian.org/security/2023/dsa-5492CVE reference · x_transferred
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.