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

Vulnerability from cvelistv5 – Published: 2026-08-15 05:54 – Updated: 2026-08-17 05:10
VLAI
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
References
Impacted products
Vendor Product Version CPE status
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)
guessed Create a notification for this product.
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)
guessed Create a notification for this product.
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{
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          "vendor": "Linux",
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              "version": "0",
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              "version": "7.1.5",
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              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
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      ],
      "cpeApplicability": [
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          "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"
      },
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          "url": "https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d"
        },
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          "url": "https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92"
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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"
  },
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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.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"net/batman-adv/main.c\",\"net/batman-adv/mesh-interface.c\",\"net/batman-adv/mesh-interface.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"86e32dfb6a6fe29898f4a562b7b6e38e480bba4d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"06ae245168268b705a204f93c318b30107d10e92\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"dbca15fcbeed5276af440a53aed3901590fa7fc9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"f2423da55976ea249f73029e468aefda4b94acba\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"f15ca6250591cfe78408114a54eaa8d58da51bfa\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"c945f6007e7851e74706c72f98763023699bcd97\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"5a82c558098889cc8bfff85cc62f563833205d91\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5d2c05b213377694a2aa8ce1ed9b23f7c39b0569\",\"lessThan\":\"8669a550c752d86baebc5fdc83b8ff35c4372c0e\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"net/batman-adv/main.c\",\"net/batman-adv/mesh-interface.c\",\"net/batman-adv/mesh-interface.h\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"3.13\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"3.13\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.261\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.212\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.178\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.145\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.97\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.40\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.1.5\",\"lessThanOrEqual\":\"7.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.2\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-18T17:32:20+00:00",
      "cve": "CVE-2026-72229",
      "id": "CVE-2026-72229",
      "initial_release_date": "2026-08-15T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: batman-adv: clean untagged VLAN on netdev registration failure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-72229.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.