FKIE_CVE-2026-72229

Vulnerability from fkie_nvd - Published: 2026-08-15 06:21 - Updated: 2026-08-17 06:18
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
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06ae245168268b705a204f93c318b30107d10e92
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5a82c558098889cc8bfff85cc62f563833205d91
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8669a550c752d86baebc5fdc83b8ff35c4372c0e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/86e32dfb6a6fe29898f4a562b7b6e38e480bba4d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c945f6007e7851e74706c72f98763023699bcd97
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbca15fcbeed5276af440a53aed3901590fa7fc9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f15ca6250591cfe78408114a54eaa8d58da51bfa
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2423da55976ea249f73029e468aefda4b94acba
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "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",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "86e32dfb6a6fe29898f4a562b7b6e38e480bba4d",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "06ae245168268b705a204f93c318b30107d10e92",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "dbca15fcbeed5276af440a53aed3901590fa7fc9",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "f2423da55976ea249f73029e468aefda4b94acba",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "f15ca6250591cfe78408114a54eaa8d58da51bfa",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "c945f6007e7851e74706c72f98763023699bcd97",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "5a82c558098889cc8bfff85cc62f563833205d91",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            },
            {
              "lessThan": "8669a550c752d86baebc5fdc83b8ff35c4372c0e",
              "status": "affected",
              "version": "5d2c05b213377694a2aa8ce1ed9b23f7c39b0569",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "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",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "lessThan": "3.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "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"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "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."
    }
  ],
  "id": "CVE-2026-72229",
  "lastModified": "2026-08-17T06:18:24.147",
  "metrics": {},
  "published": "2026-08-15T06:21:49.750",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "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"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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