{
  "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-2021-46905",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2021-46905",
    "idYear": 2021,
    "status": "PUBLISHED",
    "publishedAt": "2024-02-25T14:03:40.944Z",
    "updatedAt": "2026-05-23T15:18:41.989Z",
    "importedAt": "2026-10-24T01:56:36.661Z",
    "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: hso: fix NULL-deref on disconnect regression",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: hso: fix NULL-deref on disconnect regression\n\nCommit 8a12f8836145 (\"net: hso: fix null-ptr-deref during tty device\nunregistration\") fixed the racy minor allocation reported by syzbot, but\nintroduced an unconditional NULL-pointer dereference on every disconnect\ninstead.\n\nSpecifically, the serial device table must no longer be accessed after\nthe minor has been released by hso_serial_tty_unregister().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a462067d7c8e6953a733bf5ade8db947b1bb5449",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5871761c5f0f20d6e98bf3b6bd7486d857589554"
            },
            {
              "version": "145c89c441d27696961752bf51b323f347601bee",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0c71d4c89559f72cec2592d078681a843bce570e"
            },
            {
              "version": "caf5ac93b3b5d5fac032fc11fbea680e115421b4",
              "status": "affected",
              "versionType": "git",
              "lessThan": "24b699bea7553fc0b98dad9d864befb6005ac7f1"
            },
            {
              "version": "92028d7a31e55d53e41cff679156b9432cffcb36",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5c17cfe155d21954b4c7e2a78fa771cebcd86725"
            },
            {
              "version": "4a2933c88399c0ebc738db39bbce3ae89786d723",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d7fad2ce15bdbbd0fec3ebe999fd7cab2267f53e"
            },
            {
              "version": "dc195928d7e4ec7b5cfc6cd10dc4c8d87a7c72ac",
              "status": "affected",
              "versionType": "git",
              "lessThan": "90642ee9eb581a13569b1c0bd57e85d962215273"
            },
            {
              "version": "388d05f70f1ee0cac4a2068fd295072f1a44152a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0f000005da31f6947f843ce6b3e3a960540c6e00"
            },
            {
              "version": "8a12f8836145ffe37e9c8733dce18c22fb668b66",
              "status": "affected",
              "versionType": "git",
              "lessThan": "41c44e1f3112d7265dae522c026399b2a42d19ef"
            },
            {
              "version": "8a12f8836145ffe37e9c8733dce18c22fb668b66",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ad5692db72874f02b9ad551d26345437ea4f7f3"
            },
            {
              "version": "4.19.187",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.19.189"
            },
            {
              "version": "5.4.112",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.115"
            },
            {
              "version": "5.10.30",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.33"
            },
            {
              "version": "5.11.14",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.11.17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "4.19.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "4.19.*"
            },
            {
              "version": "5.4.115",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.33",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.11.17",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.11.*"
            },
            {
              "version": "5.12.1",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.12.*"
            },
            {
              "version": "5.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}