batman-adv: clean untagged VLAN on netdev registration failure

{
  "id": "1aaf223fcc2aa46665e1f75e45dccb07fec7268d823e8ae5a624222439866969",
  "url": "https://osv.dev/vulnerability/CVE-2026-72229",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "batman-adv: clean untagged VLAN on netdev registration failure",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: batman-adv: clean untagged VLAN on netdev registration failure When an mesh interface is registered, it creates an untagged struct batadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in this process, another receiver of this notification can veto the registration. The netdev registration will be aborted because of this veto. The register_netdevice() call will try to clean up the net_device using unregister_netdevice_queue() - which only uses the .priv_destructor to free private resources. In this situation, .dellink will not be called. The cleanup of the untagged batadv_meshif_vlan must thefore be done in the destructor to avoid a leak of this object.",
    "evidence": "osv:CVE-2026-72229",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.261",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.212",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.178",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.145",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.97",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.40",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-72229",
      "aliases": [
        "CVE-2026-72229"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "introduced": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569"
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                {
                  "fixed": "86e32dfb6a6fe29898f4a562b7b6e38e480bba4d"
                },
                {
                  "fixed": "06ae245168268b705a204f93c318b30107d10e92"
                },
                {
                  "fixed": "dbca15fcbeed5276af440a53aed3901590fa7fc9"
                },
                {
                  "fixed": "f2423da55976ea249f73029e468aefda4b94acba"
                },
                {
                  "fixed": "f15ca6250591cfe78408114a54eaa8d58da51bfa"
                },
                {
                  "fixed": "c945f6007e7851e74706c72f98763023699bcd97"
                },
                {
                  "fixed": "5a82c558098889cc8bfff85cc62f563833205d91"
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                  "fixed": "8669a550c752d86baebc5fdc83b8ff35c4372c0e"
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          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72229.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "3.13.0"
                },
                {
                  "fixed": "5.10.261"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
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                  "fixed": "5.15.212"
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              "type": "ECOSYSTEM",
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                  "introduced": "5.16.0"
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                  "introduced": "6.2.0"
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                  "introduced": "6.7.0"
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                  "fixed": "6.12.97"
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            {
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                  "introduced": "6.13.0"
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                {
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            },
            {
              "type": "ECOSYSTEM",
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                  "introduced": "6.19.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72229.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.114622044Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92",
        "https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91",
        "https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e",
        "https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d",
        "https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97",
        "https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9",
        "https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa",
        "https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72229.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-72229",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72229.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72229",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 504461,
  "published_at": "2026-08-15T05:54:20.512+00:00"
}