CVE-2023-3772 (GCVE-0-2023-3772)
Vulnerability from cvelistv5 – Published: 2023-07-25 15:47 – Updated: 2025-11-07 13:03
VLAI
EPSS
VEX
Title
Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()
Summary
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.
Severity
5.5 (Medium)
CWE
- CWE-476 - NULL Pointer Dereference
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2023:6583 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2023:6901 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2023:7077 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:0412 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2024:0575 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2023-3772 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2218943 | issue-trackingx_refsource_REDHAT |
| http://www.openwall.com/lists/oss-security/2023/08/10/1 | x_transferred |
| http://www.openwall.com/lists/oss-security/2023/08/10/3 | x_transferred |
| https://lists.debian.org/debian-lts-announce/2023… | x_transferred |
| https://lists.debian.org/debian-lts-announce/2024… | x_transferred |
| https://www.debian.org/security/2023/dsa-5492 | x_transferred |
Impacted products
9 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-513.5.1.rt7.307.el8_9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::realtime cpe:/a:redhat:enterprise_linux:8::nfv |
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-513.5.1.el8_9 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:8::baseos cpe:/a:redhat:enterprise_linux:8::crb |
||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support |
Unaffected:
0:4.18.0-372.87.1.el8_6 , < *
(rpm)
cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhev_hypervisor:4.4::el8 |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support |
Unaffected:
0:4.18.0-477.43.1.el8_8 , < *
(rpm)
cpe:/a:redhat:rhel_eus:8.8::crb cpe:/o:redhat:rhel_eus:8.8::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:5.14.0-362.8.1.el9_3 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::nfv cpe:/o:redhat:enterprise_linux:9::baseos cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::realtime |
||
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-372.87.1.el8_6 , < *
(rpm)
cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhev_hypervisor:4.4::el8 |
||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
||
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
||
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
Date Public
2023-07-21 00:00
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},
"microsoft_vex": {
"current_release_date": "2026-02-18T03:09:35.000Z",
"cve": "CVE-2023-3772",
"id": "msrc_CVE-2023-3772",
"initial_release_date": "2023-07-01T07:00:00.000Z",
"product_status:fixed": "3",
"product_status:known_affected": "3",
"source": "Microsoft CSAF VEX",
"status": "final",
"title": "Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()",
"url": "https://msrc.microsoft.com/csaf/vex/2023/msrc_cve-2023-3772.json",
"version": "2"
},
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-08-06T20:26:04+00:00",
"cve": "CVE-2023-3772",
"id": "CVE-2023-3772",
"initial_release_date": "2023-07-21T00:00:00+00:00",
"product_status:fixed": "666",
"product_status:known_affected": "64",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: xfrm: NULL pointer dereference in xfrm_update_ae_params()",
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"version": "3"
},
"suse_vex": {
"aggregate_severity": "moderate",
"current_release_date": "2026-09-08T00:15:33Z",
"cve": "CVE-2023-3772",
"id": "CVE-2023-3772",
"initial_release_date": "2024-06-04T12:36:07Z",
"product_status:known_affected": "206",
"product_status:recommended": "1706",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2023-3772",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2023-3772.json",
"version": "97"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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