CVE-2026-72229 (GCVE-0-2026-72229)
Vulnerability from cvelistv5
Published
2026-08-15 05:54
Modified
2026-08-17 05:10
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
Version: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569
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{
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          "programFiles": [
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: clean untagged VLAN on netdev registration failure\n\nWhen an mesh interface is registered, it creates an untagged struct\nbatadv_meshif_vlan on top of it via the NETDEV_REGISTER notifier. But in\nthis process, another receiver of this notification can veto the\nregistration. The netdev registration will be aborted because of this veto.\n\nThe register_netdevice() call will try to clean up the net_device using\nunregister_netdevice_queue() - which only uses the .priv_destructor to\nfree private resources. In this situation, .dellink will not be called.\n\nThe cleanup of the untagged batadv_meshif_vlan must thefore be done in the\ndestructor to avoid a leak of this object."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-17T05:10:45.285Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d"
        },
        {
          "url": "https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92"
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        {
          "url": "https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9"
        },
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          "url": "https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba"
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          "url": "https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa"
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          "url": "https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97"
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          "url": "https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91"
        },
        {
          "url": "https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e"
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      "title": "batman-adv: clean untagged VLAN on netdev registration failure",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72229",
    "datePublished": "2026-08-15T05:54:20.512Z",
    "dateReserved": "2026-08-09T03:40:39.913Z",
    "dateUpdated": "2026-08-17T05:10:45.285Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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