{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-64123",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64123",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T15:40:21.161Z",
    "updatedAt": "2026-10-19T20:28:13.256Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "net: hsr: defer node table free until after RCU readers",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hsr: defer node table free until after RCU readers\n\nHSR node-list and node-status generic-netlink operations run under\nrcu_read_lock(). They walk hsr->node_db through hsr_get_next_node() and\nhsr_get_node_data(), but RTM_DELLINK teardown removes the same node table\nwith plain list_del() and frees each node immediately.\n\nThat lets a generic-netlink reader hold a struct hsr_node pointer across\nhsr_dellink(). In a KASAN build, widening the reader window after\nhsr_get_next_node() obtains the node reproduces a slab-use-after-free\nwhen the reader copies node->macaddress_A; the freeing stack is\nhsr_del_nodes() from hsr_dellink().\n\nUse list_del_rcu() and defer the free through the existing\nhsr_free_node_rcu() callback. This matches the lifetime rule used by the\nHSR prune paths, which already delete nodes with list_del_rcu() and\ncall_rcu().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0ea70fb46940620848c08d9d399455c9e82fecdb"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8be6685cdd1255bcc85f9b59e4bfc313aefc5c1b"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c5580114e0492bcd2e0a37613ed4c311e3fa3d4d"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7713f4aafb577ff49fa67f0488d9c7dddc64d6ce"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6324423a8e6591f41a16c09a8f9a84e554ac147c"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "48d09dea506de667eb55f939bf98eec721effbdb"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "8c3af18bb0d7c921a5219194037509463eb2ffde"
            },
            {
              "version": "b9a1e627405d68d475a3c1f35e685ccfb5bbe668",
              "status": "affected",
              "versionType": "git",
              "lessThan": "aaec7096f9961eb223b5b149abe9495525c205d9"
            },
            {
              "version": "08523d5a2f4a9e4202e00d282c164d453cabe2d2",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.2.12",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.3"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.3",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.3"
            },
            {
              "version": "5.10.259",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.210",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.176",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.93",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.57",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}