{
  "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-2025-40301",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40301",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-08T00:46:24.863Z",
    "updatedAt": "2026-08-05T12:09:20.526Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "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": "Bluetooth: hci_event: validate skb length for unknown CC opcode",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: validate skb length for unknown CC opcode\n\nIn hci_cmd_complete_evt(), if the command complete event has an unknown\nopcode, we assume the first byte of the remaining skb->data contains the\nreturn status. However, parameter data has previously been pulled in\nhci_event_func(), which may leave the skb empty. If so, using skb->data[0]\nfor the return status uses un-init memory.\n\nThe fix is to check skb->len before using skb->data.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fea895de78d3bb2f0c09db9f10b18f8121b15759"
            },
            {
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "status": "affected",
              "versionType": "git",
              "lessThan": "779f83a91d4f1bf5ddfeaf528420cbb6dbf03fa8"
            },
            {
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf2c2acec1cf456c3d11c11a7589e886a0f963a9"
            },
            {
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a0ddaaf97405dbd11d4cb5a961a3f82400e8a50"
            },
            {
              "version": "afcb3369f46ed5dc883a7b92f2dd1e264d79d388",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5c5f1f64681cc889d9b13e4a61285e9e029d6ab5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.1"
            },
            {
              "version": "6.1.159",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.117",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.58",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}