{
  "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-2026-64088",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64088",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-19T15:39:58.084Z",
    "updatedAt": "2026-08-05T12:39:05.060Z",
    "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": "batman-adv: tt: fix negative tt_buff_len",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbatman-adv: tt: fix negative tt_buff_len\n\nbatadv_orig_node::tt_buff_len was declared as s16, but the field is never\nintended to hold a negative value. When a value greater than 32767 is\nassigned, it wraps to a negative signed integer.\n\nIn batadv_send_other_tt_response(), tt_buff_len is temporarily widened to\ns32. The incorrectly negative s16 value propagates into the s32, causing\nbatadv_tt_prepare_tvlv_global_data() to allocate a full sized buffer but\npopulates only a small portion of it with the collected changeset. All\nremaining bits are kept uninitialized.\n\nUsing an u16 avoids this type confusion and ensures that no (negative) sign\nextension is performed in batadv_send_other_tt_response().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c4c2f340f4c27373bfcac8dc5032ce7bb474e47"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "33e5ede7ce6d92e531920d4bbd6d3e18ef1c6430"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3c96dff00998314983b68a3e7caac07a66ebe496"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "32edd2a28e112064020a2f319a8cb8a9e5a09767"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4dab98961426d0cf6a1599cda6950b7596ca2fcd"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "730de8733dd90f70d7580a9b329b971f8e1474a2"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ed28ead3420c373a7928622f114bc6168075d1e1"
            },
            {
              "version": "a73105b8d4c765d9ebfb664d0a66802127d8e4c7",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b64963a2ceeb7529310b6cf253a1e540784422f4"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.1",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.1"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.142",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.92",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.34",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}