{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "81ba6afd6e6443d2bf4bf40f16df1f1f91c603f8"
            },
            {
              "fixed": "e691eee886871b933d772ffc76d66c80b4c0a25e"
            },
            {
              "fixed": "0a340ffd96943a49a78e367efac9517ca767d99b"
            },
            {
              "fixed": "f7289e3492f2694dccd3d79287e0e31879b58650"
            },
            {
              "fixed": "65702339b3e9fd792f65d4b740928798194d86ce"
            },
            {
              "fixed": "49b01f2939abc676a6f9a118f07a10110ee5f683"
            },
            {
              "fixed": "7f16289b91eb316f170a6bd22d32e6c632f6a5b6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.17.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100071.json"
  },
  "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.",
  "id": "CVE-2026-100071",
  "modified": "2026-09-27T03:30:45.705743114Z",
  "published": "2026-09-25T13:06:44.956Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a340ffd96943a49a78e367efac9517ca767d99b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/49b01f2939abc676a6f9a118f07a10110ee5f683"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65702339b3e9fd792f65d4b740928798194d86ce"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7f16289b91eb316f170a6bd22d32e6c632f6a5b6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e691eee886871b933d772ffc76d66c80b4c0a25e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7289e3492f2694dccd3d79287e0e31879b58650"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100071.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100071"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "net: hsr: free learned nodes on device setup failure"
}