{
  "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-2026-23235",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-23235",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-03-04T14:36:39.537Z",
    "updatedAt": "2026-05-11T22:02:56.280Z",
    "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": "f2fs: fix out-of-bounds access in sysfs attribute read/write",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix out-of-bounds access in sysfs attribute read/write\n\nSome f2fs sysfs attributes suffer from out-of-bounds memory access and\nincorrect handling of integer values whose size is not 4 bytes.\n\nFor example:\nvm:~# echo 65537 > /sys/fs/f2fs/vde/carve_out\nvm:~# cat /sys/fs/f2fs/vde/carve_out\n65537\nvm:~# echo 4294967297 > /sys/fs/f2fs/vde/atgc_age_threshold\nvm:~# cat /sys/fs/f2fs/vde/atgc_age_threshold\n1\n\ncarve_out maps to {struct f2fs_sb_info}->carve_out, which is a 8-bit\ninteger. However, the sysfs interface allows setting it to a value\nlarger than 255, resulting in an out-of-range update.\n\natgc_age_threshold maps to {struct atgc_management}->age_threshold,\nwhich is a 64-bit integer, but its sysfs interface cannot correctly set\nvalues larger than UINT_MAX.\n\nThe root causes are:\n1. __sbi_store() treats all default values as unsigned int, which\nprevents updating integers larger than 4 bytes and causes out-of-bounds\nwrites for integers smaller than 4 bytes.\n\n2. f2fs_sbi_show() also assumes all default values are unsigned int,\nleading to out-of-bounds reads and incorrect access to integers larger\nthan 4 bytes.\n\nThis patch introduces {struct f2fs_attr}->size to record the actual size\nof the integer associated with each sysfs attribute. With this\ninformation, sysfs read and write operations can correctly access and\nupdate values according to their real data size, avoiding memory\ncorruption and truncation.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e85a99db9ab85dfc30d93b0ca0e9156f3127f55a"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "438a405fbad6882df0e34b3e1a16839a71f04240"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6a6c07a9b49e43f0df42d7118fc76aa555c73d98"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eebd72cff518ac87e660aefb8a41224bd88c32ce"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4ef30b9f1641c9e877792df6b049f1cf507d002d"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d4a594dd952df123cbdcdee9b9640d9d55e4a954"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3a905e183c047577b154f08a78ac3039e9454703"
            },
            {
              "version": "b59d0bae6ca30c496f298881616258f9cde0d9c6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "98ea0039dbfdd00e5cc1b9a8afa40434476c0955"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "3.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "3.12"
            },
            {
              "version": "5.10.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.201",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.164",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.127",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.74",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19.3",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.19.*"
            },
            {
              "version": "7.0",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}