{
  "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-2026-89509",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-89509",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-11T19:43:55.336Z",
    "updatedAt": "2026-10-19T08:48:00.667Z",
    "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": "RDMA/ionic: Embed counter driver data in rdma_counter allocation",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/ionic: Embed counter driver data in rdma_counter allocation\n\nCommit 7e53b31acc7f (\"RDMA/core: Create and destroy rdma_counter using\nrdma_zalloc_drv_obj()\") requires drivers implementing counter ops to\nembed struct rdma_counter in a driver-specific struct, register its size\nvia INIT_RDMA_OBJ_SIZE, and provide a counter_init callback.\n\nThe ionic driver was merged without this adaptation, causing a NULL\npointer dereference in alloc_and_bind() since rdma_zalloc_drv_obj()\nallocates zero bytes when size_rdma_counter is unset.\n\nConsolidate struct ionic_counter into a new struct ionic_rdma_counter\nthat embeds struct rdma_counter, replace the xarray with a lightweight\nida for ID allocation, and add the required counter_init and\nINIT_RDMA_OBJ_SIZE declarations.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c98197ee3cd28288da13dc9881bb9e74daa7cbbc"
            },
            {
              "version": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
              "status": "affected",
              "versionType": "git",
              "lessThan": "08b8630b557828aedb1d9ef0a6e2ec421f334ee2"
            },
            {
              "version": "ea4c399642b85dc30f44d90ee805c6a18fa03062",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf3ebd89e754015625fee90aa938f6bc79a2c974"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.18",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.18"
            },
            {
              "version": "6.18.51",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}