Vulnerability-Lookup

GHSA-3J9Q-258H-4V38

Vulnerability from github – Published: 2026-05-27 15:33 – Updated: 2026-06-25 21:31

Details

In the Linux kernel, the following vulnerability has been resolved:

ipvs: skip ipv6 extension headers for csum checks

Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-45850"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:16:56Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipvs: skip ipv6 extension headers for csum checks\n\nProtocol checksum validation fails for IPv6 if there are extension\nheaders before the protocol header. iph-\u003elen already contains its\noffset, so use it to fix the problem.",
  "id": "GHSA-3j9q-258h-4v38",
  "modified": "2026-06-25T21:31:18Z",
  "published": "2026-05-27T15:33:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45850"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/05cfe9863ef049d98141dc2969eefde72fb07625"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bf92a90bf05ecafe52e92d5bc15a585021a64ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/768f665f3685b455ed686370ed7ccb852a125a3b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9aa7edc1347b98774e5167ca34e5b8aa6083bde7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cdce1e797addab72393c0dfee31aaca41ef7d937"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d643c1ec80b70508f54dac12179e36920e2c00de"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-45850 (GCVE-0-2026-45850)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:15 – Updated: 2026-06-19 11:58

Title

ipvs: skip ipv6 extension headers for csum checks

Summary

In the Linux kernel, the following vulnerability has been resolved: ipvs: skip ipv6 extension headers for csum checks Protocol checksum validation fails for IPv6 if there are extension headers before the protocol header. iph->len already contains its offset, so use it to fix the problem.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0bf92a90bf05ecafe…
https://git.kernel.org/stable/c/54add3b7d3c154ca8…
https://git.kernel.org/stable/c/768f665f3685b455e…
https://git.kernel.org/stable/c/9aa7edc1347b98774…
https://git.kernel.org/stable/c/d643c1ec80b70508f…
https://git.kernel.org/stable/c/cdce1e797addab723…
https://git.kernel.org/stable/c/a3ca27762ce8476b4…
https://git.kernel.org/stable/c/05cfe9863ef049d98…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 0bf92a90bf05ecafe52e92d5bc15a585021a64ac (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 54add3b7d3c154ca89ef5bac2582b0ed1a3a15d5 (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 768f665f3685b455ed686370ed7ccb852a125a3b (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 9aa7edc1347b98774e5167ca34e5b8aa6083bde7 (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < d643c1ec80b70508f54dac12179e36920e2c00de (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < cdce1e797addab72393c0dfee31aaca41ef7d937 (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < a3ca27762ce8476b4fbf9b2a8f5cb74c38e483e4 (git) Affected: 0bbdd42b7efa66685b6d74701bcde3a596a3a59d , < 05cfe9863ef049d98141dc2969eefde72fb07625 (git)
Linux	Linux	Affected: 2.6.28 Unaffected: 0 , < 2.6.28 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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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.

Detection rules are retrieved from Rulezet.

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.
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