{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-100071",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-100071"
  ],
  "published": "2026-09-25T13:07:13Z",
  "summary": "net: hsr: free learned nodes on device setup failure",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: free learned nodes on device setup failure\n\nhsr_dev_finalize() can fail after a lower-device RX handler has\nalready been registered (slave A is added before the failable slave B\nand interlink adds). RX handlers run in softirq regardless of the\nmaster's state, so frames received in that window can learn dynamic\nnodes into node_db, and the error unwind never releases them.\n\nFree both owned dynamic databases in the unwind, mirroring\nhsr_dellink(). proxy_node_db is provably empty on every current error\nexit (only interlink RX feeds it, and the interlink add is the last\nfailable step) and is freed for symmetry. The order is safe:\nhsr_del_port() unregisters each RX handler with synchronize_net()\nbefore hsr_del_nodes() runs, which removes remaining entries with\nlist_del_rcu() and defers their release with call_rcu() for readers\nalready under RCU.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-100071"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e691eee886871b933d772ffc76d66c80b4c0a25e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a340ffd96943a49a78e367efac9517ca767d99b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f7289e3492f2694dccd3d79287e0e31879b58650"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/65702339b3e9fd792f65d4b740928798194d86ce"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/49b01f2939abc676a6f9a118f07a10110ee5f683"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7f16289b91eb316f170a6bd22d32e6c632f6a5b6"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-25T13:07:13Z"
  }
}