CVE-2023-42753 (GCVE-0-2023-42753)
Vulnerability from cvelistv5 – Published: 2023-09-25 20:25 – Updated: 2026-10-14 23:47
VLAI
EPSS
VEX
Title
Kernel: netfilter: potential slab-out-of-bound access due to integer underflow
Summary
An array indexing vulnerability was found in the netfilter subsystem of the Linux kernel. A missing macro could lead to a miscalculation of the `h->nets` array offset, providing attackers with the primitive to arbitrarily increment/decrement a memory buffer out-of-bound. This issue may allow a local user to crash the system or potentially escalate their privileges on the system.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-27 20:32 UTC
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
33 references
Impacted products
33 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected:
0:3.10.0-1160.108.1.rt56.1259.el7 , < *
(rpm)
cpe:/a:redhat:rhel_extras_rt:7 |
||
| Red Hat | Red Hat Enterprise Linux 7 |
Unaffected:
0:3.10.0-1160.108.1.el7 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:7::client cpe:/o:redhat:enterprise_linux:7::computenode cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:enterprise_linux:7::workstation |
||
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7::server
|
||
| Red Hat | Red Hat Enterprise Linux 7.7 Advanced Update Support |
Unaffected:
0:3.10.0-1062.85.1.el7 , < *
(rpm)
cpe:/o:redhat:rhel_aus:7.7::server |
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-513.11.1.rt7.313.el8_9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::nfv cpe:/a:redhat:enterprise_linux:8::realtime |
||
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-513.11.1.el8_9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.2 Advanced Update Support |
Unaffected:
0:4.18.0-193.120.1.el8_2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.2::baseos cpe:/o:redhat:rhel_e4s:8.2::baseos cpe:/o:redhat:rhel_tus:8.2::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service |
Unaffected:
0:4.18.0-193.120.1.rt13.171.el8_2 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.2::nfv cpe:/a:redhat:rhel_tus:8.2::realtime |
||
| Red Hat | Red Hat Enterprise Linux 8.2 Telecommunications Update Service |
Unaffected:
0:4.18.0-193.120.1.el8_2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.2::baseos cpe:/o:redhat:rhel_e4s:8.2::baseos cpe:/o:redhat:rhel_tus:8.2::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions |
cpe:/o:redhat:rhel_e4s:8.2::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions |
Unaffected:
0:4.18.0-193.120.1.el8_2 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.2::baseos cpe:/o:redhat:rhel_e4s:8.2::baseos cpe:/o:redhat:rhel_tus:8.2::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:4.18.0-305.120.1.el8_4 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service |
Unaffected:
0:4.18.0-305.120.1.rt7.196.el8_4 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.4::nfv cpe:/a:redhat:rhel_tus:8.4::realtime |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Telecommunications Update Service |
Unaffected:
0:4.18.0-305.120.1.el8_4 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions |
Unaffected:
0:4.18.0-305.120.1.el8_4 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_e4s:8.4::baseos cpe:/o:redhat:rhel_tus:8.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions |
cpe:/o:redhat:rhel_e4s:8.4::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support |
cpe:/o:redhat:rhel_eus:8.6::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support |
Unaffected:
0:4.18.0-372.87.1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos cpe:/o:redhat:rhev_hypervisor:4.4::el8 |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support |
Unaffected:
0:4.18.0-477.36.1.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 8.8 Extended Update Support |
cpe:/o:redhat:rhel_eus:8.8::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:5.14.0-362.18.1.el9_3 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/a:redhat:enterprise_linux:9::crb cpe:/a:redhat:enterprise_linux:9::nfv cpe:/a:redhat:enterprise_linux:9::realtime cpe:/o:redhat:enterprise_linux:9::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
Unaffected:
0:5.14.0-70.80.1.el9_0 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.0::appstream cpe:/a:redhat:rhel_eus:9.0::crb cpe:/o:redhat:rhel_eus:9.0::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
Unaffected:
0:5.14.0-70.80.1.rt21.151.el9_0 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.0::nfv cpe:/a:redhat:rhel_eus:9.0::realtime |
||
| Red Hat | Red Hat Enterprise Linux 9.0 Extended Update Support |
cpe:/o:redhat:rhel_eus:9.0::baseos
|
||
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
Unaffected:
0:5.14.0-284.40.1.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/a:redhat:rhel_eus:9.2::crb cpe:/o:redhat:rhel_eus:9.2::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
Unaffected:
0:5.14.0-284.40.1.rt14.325.el9_2 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.2::nfv cpe:/a:redhat:rhel_eus:9.2::realtime |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
cpe:/o:redhat:rhel_eus:9.2::baseos
|
||
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 |
Unaffected:
0:4.18.0-372.87.1.el8_6 , < *
(rpm)
cpe:/a:redhat:rhel_eus:8.6::crb cpe:/o:redhat:rhel_eus:8.6::baseos 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 9 |
cpe:/o:redhat:enterprise_linux:9
|
||
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < V1.1
(custom)
|
guessed |
Date Public
2023-09-22 00:00
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"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-787: Out-of-bounds Write"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2023-42753",
"datePublished": "2023-09-25T20:25:59.706Z",
"dateReserved": "2023-09-13T11:03:47.961Z",
"dateUpdated": "2026-08-06T19:18:40.661Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
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.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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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.