{
  "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-2026-93049",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-93049",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-17T16:10:39.679Z",
    "updatedAt": "2026-10-19T09:04:44.322Z",
    "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": "mtd: mtdswap: Avoid freeing registered blktrans device twice",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: mtdswap: Avoid freeing registered blktrans device twice\n\nIn mtdswap_add_mtd(), debugfs setup failure after successful blktrans\nregistration can free mbd_dev twice.\n\nadd_mtd_blktrans_dev() initializes the blktrans device reference and\npublishes the disk. Once that succeeds, del_mtd_blktrans_dev() tears the\ndisk down and drops the blktrans reference; when that reference reaches\nzero, blktrans_dev_release() frees the mtd_blktrans_dev.\n\nThe debugfs failure path called del_mtd_blktrans_dev(mbd_dev), then fell\nthrough the common cleanup label and called kfree(mbd_dev) again. Clear\nthe local pointer after deregistration so the common cleanup can still\nrelease the mtdswap state without freeing the blktrans object twice.\n\nThis issue was found by a static analysis checker and confirmed by\nmanual source review.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ecadb9137aeaa0615183f8d23eabea2b45c862f1"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eec130fc9ffbbd08a5d5432683122b79aca2a726"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d5086911d532b82ca070d944aa08ddde00baefe4"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0ce48c6ddea1a8e675a2eb0221b62a9950788f3c"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a82d93fcfdfd26af17049c34319dfdd079cd1901"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5c349c533e72af2313c3be0f80a24d7407fa4777"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "37be7bc2c2d09c18e939da20224405864a0090b9"
            },
            {
              "version": "e8e3edb95ce6a146bc774b6cfad3553f4383edc8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "779aa4c66a96bf43d2d62982ea1a9096a9128d87"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.14",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.14"
            },
            {
              "version": "5.10.270",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.221",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}