{
  "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-2026-99030",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-99030",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-10-23T12:21:23.271Z",
    "updatedAt": "2026-10-23T12:21:23.271Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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: skbuff: don't leave stale bytes in skb_copy_and_csum_bits()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: don't leave stale bytes in skb_copy_and_csum_bits()\n\nWhen skb_copy_and_csum_bits() reaches unreadable frags it returns 0\nafter copying only the linear part, and the rest of the caller's buffer\nis left as it was.  The callers copy into a buffer that is about to go\nout on the wire: an ICMP error quoting the offending packet, or a\ndriver's TX bounce buffer in skb_copy_and_csum_dev().  Neither buffer\nis zeroed beforehand, so whatever was in memory there gets sent.\n\nZero the part of the buffer we didn't fill.  The checksum usually\nwon't match the data any more, so the receiver will usually drop the\npacket, but either way it no longer carries anything it shouldn't.\nOnly zero for a positive @len, a negative one from a broken caller must\nnot turn into a huge memset().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "65249feb6b3df9e17bab5911ee56fa7b0971e231",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5f19b9cfff79508e8cb09be40d014cb0807f3854"
            },
            {
              "version": "65249feb6b3df9e17bab5911ee56fa7b0971e231",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5551399751e2c9f31e4f3428040985a07e79d9c2"
            },
            {
              "version": "65249feb6b3df9e17bab5911ee56fa7b0971e231",
              "status": "affected",
              "versionType": "git",
              "lessThan": "39d1a6b601831237c6038b5e3ac8dbb883c1700a"
            },
            {
              "version": "65249feb6b3df9e17bab5911ee56fa7b0971e231",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ab9414ed70bd783e902a85c350620dee269bcb2b"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.12"
            },
            {
              "version": "6.12.113",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.57",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.11",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}