{
  "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-2025-21850",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-21850",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-03-12T09:42:05.761Z",
    "updatedAt": "2026-08-05T11:54:53.966Z",
    "importedAt": "2026-10-24T01:57:29.455Z",
    "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: Fix crash when a namespace is disabled",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvmet: Fix crash when a namespace is disabled\n\nThe namespace percpu counter protects pending I/O, and we can\nonly safely diable the namespace once the counter drop to zero.\nOtherwise we end up with a crash when running blktests/nvme/058\n(eg for loop transport):\n\n[ 2352.930426] [  T53909] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN PTI\n[ 2352.930431] [  T53909] KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f]\n[ 2352.930434] [  T53909] CPU: 3 UID: 0 PID: 53909 Comm: kworker/u16:5 Tainted: G        W          6.13.0-rc6 #232\n[ 2352.930438] [  T53909] Tainted: [W]=WARN\n[ 2352.930440] [  T53909] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-3.fc41 04/01/2014\n[ 2352.930443] [  T53909] Workqueue: nvmet-wq nvme_loop_execute_work [nvme_loop]\n[ 2352.930449] [  T53909] RIP: 0010:blkcg_set_ioprio+0x44/0x180\n\nas the queue is already torn down when calling submit_bio();\n\nSo we need to init the percpu counter in nvmet_ns_enable(), and\nwait for it to drop to zero in nvmet_ns_disable() to avoid having\nI/O pending after the namespace has been disabled.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "74d16965d7ac378d28ebd833ae6d6a097186a4ec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cc0607594f6813342b27c752c6fb6f6eb9980cb5"
            },
            {
              "version": "74d16965d7ac378d28ebd833ae6d6a097186a4ec",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4082326807072b71496501b6a0c55ffe8d5092a5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.13"
            },
            {
              "version": "6.13.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.13.*"
            },
            {
              "version": "6.14",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}