CVE-2026-64094 (GCVE-0-2026-64094)
Vulnerability from cvelistv5
Published
2026-07-19 15:40
Modified
2026-07-19 15:40
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface Without rtnl_lock held, a hardif might be retrieved as primary interface of a meshif, but then (while operating on this interface) getting decoupled from the mesh interface. In this case, the meshif still exists but the pointer from the primary hardif to the meshif is set to NULL. The mesh_iface must be checked first to be non-NULL before continuing to send an ARP request using meshif.
References
Impacted products
Vendor Product Version
Linux Linux Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
Version: 23721387c409087fd3b97e274f34d3ddc0970b74
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{
  "containers": {
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          "programFiles": [
            "net/batman-adv/bridge_loop_avoidance.c"
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            },
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              "version": "0",
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              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: bla: avoid NULL-ptr deref for claim via dropped interface\n\nWithout rtnl_lock held, a hardif might be retrieved as primary interface of\na meshif, but then (while operating on this interface) getting decoupled\nfrom the mesh interface. In this case, the meshif still exists but the\npointer from the primary hardif to the meshif is set to NULL.\n\nThe mesh_iface must be checked first to be non-NULL before continuing to\nsend an ARP request using meshif."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:40:01.772Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/4f6266735a0ba6a568b6d4c9fa51c33a5a7f2d70"
        },
        {
          "url": "https://git.kernel.org/stable/c/53cb3511f6eda37d3bd923545fdba6013b6d7bb7"
        },
        {
          "url": "https://git.kernel.org/stable/c/efb62458c94db1fe3a287e7e89c31b0cfb03f938"
        },
        {
          "url": "https://git.kernel.org/stable/c/2a8c9e86529156c62d9187b9ed9454c31665ad33"
        },
        {
          "url": "https://git.kernel.org/stable/c/0f3ebd7bb417aabc44853cc7c2a184ebb0e05b45"
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        {
          "url": "https://git.kernel.org/stable/c/6921a7683ae9ad0208d829e71f725a9e25ccff49"
        },
        {
          "url": "https://git.kernel.org/stable/c/555b8d3f5c313d81d46274fd0976352dafc80124"
        },
        {
          "url": "https://git.kernel.org/stable/c/f80d3d98d2ff78d9e2fe5d68b1f45948c4f7bd24"
        }
      ],
      "title": "batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface",
      "x_generator": {
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-64094",
    "datePublished": "2026-07-19T15:40:01.772Z",
    "dateReserved": "2026-07-19T07:54:57.032Z",
    "dateUpdated": "2026-07-19T15:40:01.772Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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