{
  "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-2026-90176",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-90176",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:07:02.433Z",
    "updatedAt": "2026-10-19T08:59:13.411Z",
    "importedAt": "2026-10-24T01:58:35.090Z",
    "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: Do not skip lock checks for single-byte ranges",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: Do not skip lock checks for single-byte ranges\n\ncheck_lock_range() uses inclusive ranges. Its callers pass the end\noffset as start + length - 1, so start == end represents a valid\nsingle-byte range rather than an empty range.\n\nThe start == end shortcut therefore skips mandatory byte-range lock\nchecks for one-byte reads, writes, copychunk operations and one-byte\ntruncate ranges. A conflicting lock covering that byte is not checked\nand the operation is allowed to proceed.\n\nRemove the shortcut. The truncate size == inode->i_size case is already\nhandled by only calling check_lock_range() when the new size differs\nfrom the current file size.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "52fcbb92e0d3acfd1448b2a43b6595d540da5295",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a89cc145832e81c32199d4ca2e1ea8bd51ed601d"
            },
            {
              "version": "da29cd197246c85c0473259f1cad897d9d28faea",
              "status": "affected",
              "versionType": "git",
              "lessThan": "993e0158331d37c04da18efe551b5e1e35fb3078"
            },
            {
              "version": "a6f4cfa3783804336491e0edcb250c25f9b59d33",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f751d6e39d4c937c45f8fedc66699aa7d2d52288"
            },
            {
              "version": "571204e4758a528fbd67330bd4b0dfbdafb33dd8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "84c2d8e807ac489f5c91769293fb15dfdae8bae8"
            },
            {
              "version": "5d510ac31626ed157d2182149559430350cf2104",
              "status": "affected",
              "versionType": "git",
              "lessThan": "07a9e289ff7edcc004f58952405f8a65c4e37512"
            },
            {
              "version": "5d510ac31626ed157d2182149559430350cf2104",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d40c24634fe077a0dc91fd11fccf44ce12b454d5"
            },
            {
              "version": "6.1.160",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.188"
            },
            {
              "version": "6.6.120",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.157"
            },
            {
              "version": "6.12.64",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.110"
            },
            {
              "version": "6.18.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.18.52"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.19",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.19"
            },
            {
              "version": "6.1.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.157",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.110",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.52",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}