{
  "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-2026-89742",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89742",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:46:48.522Z",
    "updatedAt": "2026-10-19T08:51:56.183Z",
    "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": "rapidio: mport_cdev: fix use-after-free in dma_req_free()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nrapidio: mport_cdev: fix use-after-free in dma_req_free()\n\ndma_req_free() acquires buf_mutex through req->map, drops the mapping\nreference with kref_put(), and then dereferences req->map again to unlock\nthe mutex.\n\nIf kref_put() drops the last reference, mport_release_mapping() frees the\nmapping, and the subsequent mutex_unlock() dereferences a freed object. \nThis is a use-after-free.\n\nFix this by caching map and md before kref_put(), clearing req->map while\nholding buf_mutex, and using the cached md for mutex unlocking.\n\nThe bug is reachable from userspace via the RapidIO mport character device\ninterface.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "00c5ed913b0dc563fbeb8a97ea8916c03bbbbf6a"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fc79c07cdcde02c5b17633d78777de6ac2c14b29"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "26ccfe7d69e27b0d933ae0a64a23a0cb9b9a85a6"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "bd8881c24a9520f9c3d3e855d866197f63e471a7"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9a9929ec875ff20922c90c96fd544ae8a2a61a8d"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e6e925cc1f8067c65c7bec3da50a0ead3b3ef4e0"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "211c68d817a3d9dc14c0026a59da7cac30f8147e"
            },
            {
              "version": "e8de370188d098bb49483c287b44925957c3c9b6",
              "status": "affected",
              "versionType": "git",
              "lessThan": "5cbef379a94b161726c5f504598bf4791d45cedc"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.6"
            },
            {
              "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": "6.12.109",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.50",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}