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GHSA-9V49-JVP7-MG86

Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31

Details

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

net: bridge: vlan: fix bugs caused by switchdev deletion errors

Allowing switchdev to prevent vlan deletion and error out in __vlan_del could cause multiple different issues - inconsistent state, memory leaks when flushing, NULL pointer dereference on bridge error when flushing. It doesn't make sense to allow it to stop __vlan_del, so log the error and continue with software vlan deletion. This is also consistent with 8021q behaviour.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-98285"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T09:18:18Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: vlan: fix bugs caused by switchdev deletion errors\n\nAllowing switchdev to prevent vlan deletion and error out in __vlan_del\ncould cause multiple different issues - inconsistent state, memory leaks\nwhen flushing, NULL pointer dereference on bridge error when flushing.\nIt doesn\u0027t make sense to allow it to stop __vlan_del, so log the error\nand continue with software vlan deletion. This is also consistent with\n8021q behaviour.",
  "id": "GHSA-9v49-jvp7-mg86",
  "modified": "2026-10-06T09:31:33Z",
  "published": "2026-10-06T09:31:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98285"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2842ce397dd09882530b42f7fdb0c855767eb24e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed3ea86db736a30bebf49b947c42730e8451bcd2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-98285 (GCVE-0-2026-98285)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:45 – Updated: 2026-10-06 08:45

Title

net: bridge: vlan: fix bugs caused by switchdev deletion errors

Summary

In the Linux kernel, the following vulnerability has been resolved: net: bridge: vlan: fix bugs caused by switchdev deletion errors Allowing switchdev to prevent vlan deletion and error out in __vlan_del could cause multiple different issues - inconsistent state, memory leaks when flushing, NULL pointer dereference on bridge error when flushing. It doesn't make sense to allow it to stop __vlan_del, so log the error and continue with software vlan deletion. This is also consistent with 8021q behaviour.

Severity

No CVSS data available.

Assigner

Linux CNA under the mitre root

CNA scorecard D 53/100 over 6664 records in the last 180 days details

References

2 references

URL	Tags
https://git.kernel.org/stable/c/ed3ea86db736a30be…
https://git.kernel.org/stable/c/2842ce397dd098825…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: bf361ad38165939049a2649b1a0078f3268d4bd1 , < ed3ea86db736a30bebf49b947c42730e8451bcd2 (git) Affected: bf361ad38165939049a2649b1a0078f3268d4bd1 , < 2842ce397dd09882530b42f7fdb0c855767eb24e (git)
Linux	Linux	Affected: 4.3 Unaffected: 0 , < 4.3 (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_vlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "ed3ea86db736a30bebf49b947c42730e8451bcd2",
              "status": "affected",
              "version": "bf361ad38165939049a2649b1a0078f3268d4bd1",
              "versionType": "git"
            },
            {
              "lessThan": "2842ce397dd09882530b42f7fdb0c855767eb24e",
              "status": "affected",
              "version": "bf361ad38165939049a2649b1a0078f3268d4bd1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/bridge/br_vlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc4",
                  "versionStartIncluding": "4.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: vlan: fix bugs caused by switchdev deletion errors\n\nAllowing switchdev to prevent vlan deletion and error out in __vlan_del\ncould cause multiple different issues - inconsistent state, memory leaks\nwhen flushing, NULL pointer dereference on bridge error when flushing.\nIt doesn\u0027t make sense to allow it to stop __vlan_del, so log the error\nand continue with software vlan deletion. This is also consistent with\n8021q behaviour."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:45:46.332Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/ed3ea86db736a30bebf49b947c42730e8451bcd2"
        },
        {
          "url": "https://git.kernel.org/stable/c/2842ce397dd09882530b42f7fdb0c855767eb24e"
        }
      ],
      "title": "net: bridge: vlan: fix bugs caused by switchdev deletion errors",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98285",
    "datePublished": "2026-10-06T08:45:46.332Z",
    "dateReserved": "2026-09-25T10:25:14.335Z",
    "dateUpdated": "2026-10-06T08:45:46.332Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.
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