{
  "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-2025-21669",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21669",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-01-31T11:25:33.185Z",
    "updatedAt": "2026-10-15T01:02:55.148Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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": "vsock/virtio: discard packets if the transport changes",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nvsock/virtio: discard packets if the transport changes\n\nIf the socket has been de-assigned or assigned to another transport,\nwe must discard any packets received because they are not expected\nand would cause issues when we access vsk->transport.\n\nA possible scenario is described by Hyunwoo Kim in the attached link,\nwhere after a first connect() interrupted by a signal, and a second\nconnect() failed, we can find `vsk->transport` at NULL, leading to a\nNULL pointer dereference.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "18a7fc371d1dbf8deff16c2dd9292bcc73f43040"
            },
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6486915fa661584d70e8e7e4068c6c075c67dd6d"
            },
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "88244163bc7e7b0ce9dd7bf4c8a563b41525c3ee"
            },
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d88b249e14bd0ee1e46bbe4f456e22e01b8c68de"
            },
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "677579b641af109613564460a4e3bdcb16850b61"
            },
            {
              "version": "c0cfa2d8a788fcf45df5bf4070ab2474c88d543a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2cb7c756f605ec02ffe562fb26828e4bcc5fdfc1"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.5",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "5.10.234",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.177",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.127",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.74",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.13",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}