Vulnerability-Lookup

GHSA-6MP3-G7QW-8RGW

Vulnerability from github – Published: 2026-09-17 18:31 – Updated: 2026-09-17 18:31

Details

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

vxlan: fix reading neigh ha

Currently arp/neigh_reduce read neigh ha directly which can lead to partial reads while the neigh is being updated. Use neigh_ha_snapshot to take a stable snapshot of the address similar to route_shortcircuit which already does the right thing.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90105"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:02Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: fix reading neigh ha\n\nCurrently arp/neigh_reduce read neigh ha directly which can lead to\npartial reads while the neigh is being updated. Use neigh_ha_snapshot to\ntake a stable snapshot of the address similar to route_shortcircuit which\nalready does the right thing.",
  "id": "GHSA-6mp3-g7qw-8rgw",
  "modified": "2026-09-17T18:31:51Z",
  "published": "2026-09-17T18:31:51Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90105"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b824059a673b2283e78c7aae2c7d257aad7f0e1d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecc8bac11a101e5f6989a14b92e17b51f9761630"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90105 (GCVE-0-2026-90105)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:06 – Updated: 2026-09-17 16:06

Title

vxlan: fix reading neigh ha

Summary

In the Linux kernel, the following vulnerability has been resolved: vxlan: fix reading neigh ha Currently arp/neigh_reduce read neigh ha directly which can lead to partial reads while the neigh is being updated. Use neigh_ha_snapshot to take a stable snapshot of the address similar to route_shortcircuit which already does the right thing.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ecc8bac11a101e5f6…
https://git.kernel.org/stable/c/b824059a673b2283e…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e4f67addf158f98f8197e08974966b18480dc751 , < ecc8bac11a101e5f6989a14b92e17b51f9761630 (git) Affected: e4f67addf158f98f8197e08974966b18480dc751 , < b824059a673b2283e78c7aae2c7d257aad7f0e1d (git)
Linux	Linux	Affected: 3.8 Unaffected: 0 , < 3.8 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/vxlan/vxlan_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ecc8bac11a101e5f6989a14b92e17b51f9761630",
              "status": "affected",
              "version": "e4f67addf158f98f8197e08974966b18480dc751",
              "versionType": "git"
            },
            {
              "lessThan": "b824059a673b2283e78c7aae2c7d257aad7f0e1d",
              "status": "affected",
              "version": "e4f67addf158f98f8197e08974966b18480dc751",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/vxlan/vxlan_core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
              "lessThan": "3.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "3.8",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvxlan: fix reading neigh ha\n\nCurrently arp/neigh_reduce read neigh ha directly which can lead to\npartial reads while the neigh is being updated. Use neigh_ha_snapshot to\ntake a stable snapshot of the address similar to route_shortcircuit which\nalready does the right thing."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:06:14.829Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ecc8bac11a101e5f6989a14b92e17b51f9761630"
        },
        {
          "url": "https://git.kernel.org/stable/c/b824059a673b2283e78c7aae2c7d257aad7f0e1d"
        }
      ],
      "title": "vxlan: fix reading neigh ha",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90105",
    "datePublished": "2026-09-17T16:06:14.829Z",
    "dateReserved": "2026-09-11T19:38:34.786Z",
    "dateUpdated": "2026-09-17T16:06:14.829Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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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.

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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GHSA-6MP3-G7QW-8RGW

CVE-2026-90105 (GCVE-0-2026-90105)

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