{
  "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-2026-31432",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-31432",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-04-22T08:15:10.873Z",
    "updatedAt": "2026-08-05T12:22:26.699Z",
    "importedAt": "2026-10-24T01:58:02.025Z",
    "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": "ksmbd: fix OOB write in QUERY_INFO for compound requests",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix OOB write in QUERY_INFO for compound requests\n\nWhen a compound request such as READ + QUERY_INFO(Security) is received,\nand the first command (READ) consumes most of the response buffer,\nksmbd could write beyond the allocated buffer while building a security\ndescriptor.\n\nThe root cause was that smb2_get_info_sec() checked buffer space using\nppntsd_size from xattr, while build_sec_desc() often synthesized a\nsignificantly larger descriptor from POSIX ACLs.\n\nThis patch introduces smb_acl_sec_desc_scratch_len() to accurately\ncompute the final descriptor size beforehand, performs proper buffer\nchecking with smb2_calc_max_out_buf_len(), and uses exact-sized\nallocation + iov pinning.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "850452af77f55d185f9445e1f7a1db53c5e4aad4"
            },
            {
              "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d48c64fb80ad78b3dd29fb7d79b6ec7bd72bfc09"
            },
            {
              "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "075ea208c648cc2bcd616295b711d3637c61de45"
            },
            {
              "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "515c2daab46021221bdf406bef19bc90a44ec617"
            },
            {
              "version": "e2b76ab8b5c9327ab2dae6da05d0752eb2f4771d",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fda9522ed6afaec45cabc198d8492270c394c7bc"
            },
            {
              "version": "f2283680a80571ca82d710bc6ecd8f8beac67d63",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "9f297df20d93411c0b4ddad7f88ba04a7cd36e77",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.15.145",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.16"
            },
            {
              "version": "6.1.71",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.2"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.6"
            },
            {
              "version": "6.6.143",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.81",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.22",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.12",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}