CVE-2026-46037 (GCVE-0-2026-46037)
Vulnerability from cvelistv5 – Published: 2026-05-27 12:56 – Updated: 2026-09-08 08:49
VLAI
EPSS
VEX
Title
ipv4: icmp: validate reply type before using icmp_pointers
Summary
In the Linux kernel, the following vulnerability has been resolved:
ipv4: icmp: validate reply type before using icmp_pointers
Extended echo replies use ICMP_EXT_ECHOREPLY as the outbound reply type.
That value is outside the range covered by icmp_pointers[], which only
describes the traditional ICMP types up to NR_ICMP_TYPES.
Avoid consulting icmp_pointers[] for reply types outside that range, and
use array_index_nospec() for the remaining in-range lookup. Normal ICMP
replies keep their existing behavior unchanged.
Severity
8.2 (High)
Assigner
References
8 references
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Linux | Linux |
Affected:
d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < b3a88fc5ae024d43c5ecf653f3bbe837e4a6dc99
(git)
Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < 93df2af4f491de33827550b9d420f01808c0706b (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < 92e7c209036dcc0e8ffdf806fdfd3645b263bea5 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < bc64a66e0b9ad937d3d49934242ee62b01ba9a94 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < c2178ff1c70ebfc2ab9651b230c58a34683db759 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < d700c34a5d186b9ba0715bcb19e0ff80ffbfbfc1 (git) Affected: d329ea5bd8845f0b196bf41b18b6173340d6e0e4 , < 67bf002a2d7387a6312138210d0bd06e3cf4879b (git) |
guessed | |
| Linux | Linux |
Affected:
5.13
Unaffected: 0 , < 5.13 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.86 , ≤ 6.12.* (semver) Unaffected: 6.18.27 , ≤ 6.18.* (semver) Unaffected: 7.0.4 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix) |
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
guessed |
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"redhat_vex": {
"aggregate_severity": "Moderate",
"current_release_date": "2026-07-02T21:31:12+00:00",
"cve": "CVE-2026-46037",
"id": "CVE-2026-46037",
"initial_release_date": "2026-05-27T00:00:00+00:00",
"product_status:fixed": "4",
"product_status:known_affected": "198",
"product_status:known_not_affected": "76",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "kernel: ipv4: icmp: validate reply type before using icmp_pointers",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46037.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-09-15T02:05:07Z",
"cve": "CVE-2026-46037",
"id": "CVE-2026-46037",
"initial_release_date": "2026-05-28T03:53:55Z",
"product_status:first_fixed": "2",
"product_status:known_affected": "389",
"product_status:known_not_affected": "175",
"product_status:recommended": "664",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-46037",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46037.json",
"version": "34"
}
}
}
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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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