{
  "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-2026-53130",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-53130",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-06-24T16:30:57.227Z",
    "updatedAt": "2026-08-05T12:33:24.185Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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": "fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START\n\nomfs_fill_super() rejects oversized s_sys_blocksize values (> PAGE_SIZE),\nbut it does not reject values smaller than OMFS_DIR_START (0x1b8 = 440).\n\nLater, omfs_make_empty() uses\n\n    sbi->s_sys_blocksize - OMFS_DIR_START\n\nas the length argument to memset().  Since s_sys_blocksize is u32,\na crafted filesystem image with s_sys_blocksize < OMFS_DIR_START causes\nan unsigned underflow there, wrapping to a value near 2^32.  That drives\na ~4 GiB memset() from bh->b_data + OMFS_DIR_START and overwrites kernel\nmemory far beyond the backing block buffer.\n\nAdd the corresponding lower-bound check alongside the existing upper-bound\ncheck in omfs_fill_super(), so that malformed images are rejected during\nsuperblock validation before any filesystem data is processed.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fbc72f5c645155dc2ed3573243ed20f9913e3a54"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5822a05a841a10794ad818620dd2af490b0705d3"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "754ff1bea3819a90c6f33cccfc1a299ef7609f07"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "131ea3e57fc22936ed0e2c8330f2e36106172f51"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "79f84af38c9fef9deb0e02c79eb969b5541c2644"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "6561afc38398e3518a29c5eebb975c30468f98a6"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "817f16ed62bc58a168417bfb5e859c2a370bab03"
            },
            {
              "version": "a3ab7155ea21aadc8a4d5687e91b3d876973185e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0621c385fda1376e967f37ccd534c26c3e511d14"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.27",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.27"
            },
            {
              "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": "6.6.141",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.91",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.33",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.10",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}