Vulnerability-Lookup

GHSA-7P74-4RVH-GR76

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72229"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:21:49Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-7p74-4rvh-gr76",
  "modified": "2026-08-15T06:32:16Z",
  "published": "2026-08-15T06:32:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72229"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-72229 (GCVE-0-2026-72229)

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:10

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/86e32dfb6a6fe2989…
https://git.kernel.org/stable/c/06ae245168268b705…
https://git.kernel.org/stable/c/dbca15fcbeed5276a…
https://git.kernel.org/stable/c/f2423da55976ea249…
https://git.kernel.org/stable/c/f15ca6250591cfe78…
https://git.kernel.org/stable/c/c945f6007e7851e74…
https://git.kernel.org/stable/c/5a82c558098889cc8…
https://git.kernel.org/stable/c/8669a550c752d86ba…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < 86e32dfb6a6fe29898f4a562b7b6e38e480bba4d (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < 06ae245168268b705a204f93c318b30107d10e92 (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < dbca15fcbeed5276af440a53aed3901590fa7fc9 (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < f2423da55976ea249f73029e468aefda4b94acba (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < f15ca6250591cfe78408114a54eaa8d58da51bfa (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < c945f6007e7851e74706c72f98763023699bcd97 (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < 5a82c558098889cc8bfff85cc62f563833205d91 (git) Affected: 5d2c05b213377694a2aa8ce1ed9b23f7c39b0569 , < 8669a550c752d86baebc5fdc83b8ff35c4372c0e (git)
Linux	Linux	Affected: 3.13 Unaffected: 0 , < 3.13 (semver) Unaffected: 5.10.261 , ≤ 5.10.* (semver) Unaffected: 5.15.212 , ≤ 5.15.* (semver) Unaffected: 6.1.178 , ≤ 6.1.* (semver) Unaffected: 6.6.145 , ≤ 6.6.* (semver) Unaffected: 6.12.97 , ≤ 6.12.* (semver) Unaffected: 6.18.40 , ≤ 6.18.* (semver) Unaffected: 7.1.5 , ≤ 7.1.* (semver) Unaffected: 7.2 , ≤ * (original_commit_for_fix)

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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
            "net/batman-adv/main.c",
            "net/batman-adv/mesh-interface.c",
            "net/batman-adv/mesh-interface.h"
          ],
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          "vendor": "Linux",
          "versions": [
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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            }
          ]
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                  "versionStartIncluding": "3.13",
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      "descriptions": [
        {
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          "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."
        }
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      "providerMetadata": {
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          "url": "https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91"
        },
        {
          "url": "https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e"
        }
      ],
      "title": "batman-adv: clean untagged VLAN on netdev registration failure",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-72229",
    "datePublished": "2026-08-15T05:54:20.512Z",
    "dateReserved": "2026-08-09T03:40:39.913Z",
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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.

Action not permitted

GHSA-7P74-4RVH-GR76

CVE-2026-72229 (GCVE-0-2026-72229)

Tags

Sightings

Nomenclature