{
  "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-2026-64534",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64534",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-27T06:32:34.301Z",
    "updatedAt": "2026-10-19T20:48:38.863Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "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": "nvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet-tcp: check INIT_FAILED before nvmet_req_uninit in digest error path\n\nIn nvmet_tcp_try_recv_ddgst(), when a data digest mismatch is detected,\nnvmet_req_uninit() is called unconditionally. However, if the command\narrived via the nvmet_tcp_handle_req_failure() path, nvmet_req_init()\nhad returned false and percpu_ref_tryget_live() was never executed. The\nunconditional percpu_ref_put() inside nvmet_req_uninit() then causes a\nrefcount underflow, leading to a WARNING in\npercpu_ref_switch_to_atomic_rcu, a use-after-free diagnostic, and\neventually a permanent workqueue deadlock.\n\nCheck cmd->flags & NVMET_TCP_F_INIT_FAILED before calling\nnvmet_req_uninit(), matching the existing pattern in\nnvmet_tcp_execute_request().",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "91edfca6f8b364d60cde3ddefaf7d03ddf35774b",
              "status": "affected",
              "versionType": "git",
              "lessThan": "22ec7a9fe9153d2737ee9b2fa6d2e43a1491decf"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ba35b1c674ca3841c0dfadd698f2c1b3ec542d4e"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c7874dad84b20433c0fe3919f291a762d40de08b"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e602c93b25bda4a9d0ff1791a4bdbfdcbb074af1"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d306da8833e75f669d93424fd84940236f3850bc"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2ed3c9d955e8cd6361f130623baa664a75fb345f"
            },
            {
              "version": "fda871c0ba5d2eed2cd1c881573168129da70058",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4606467a75cfc16721937272ed29462a750b60c8"
            },
            {
              "version": "4b17476d809273617d3317fa0d4ae78aa488d760",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.20",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.261"
            },
            {
              "version": "5.11.3",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.12"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.12",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.12"
            },
            {
              "version": "5.10.261",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.212",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}