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CVE-2026-90188

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

null_blk: free global tag_set on init error path

If shared_tags is enabled, null_setup_tagset() allocates the global tag_set via null_init_global_tag_set(). If device creation later fails, err_dev destroys the default devices and calls unregister_blkdev(), but never frees the global tag_set. Since module init failed, null_exit() is never invoked, so the global tag_set's tags and maps are permanently leaked.

Free the global tag_set in err_dev, matching null_exit() which does if (tag_set.ops) blk_mq_free_tag_set(&tag_set).

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-90188",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "0b2faa330184340d9418ad2c627c2ae881772e33",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "665c94554ff0d5d88caae7f40c16c8e0a3369eda",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "2882e1450fa4597811a951196e07553ea134eb31",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "2b59484ac1e64dd78dbe8c6140891c6308085a75",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "081cf37e8a0e00cd91d6df53172c9d928790a798",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
              "lessThan": "5a1c5ff3a49ba93a1fd0b70537e7a0164071760d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/block/null_blk/main.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/block/null_blk/main.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:13.397",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: free global tag_set on init error path\n\nIf shared_tags is enabled, null_setup_tagset() allocates the global tag_set\nvia null_init_global_tag_set(). If device creation later fails, err_dev\ndestroys the default devices and calls unregister_blkdev(), but never frees\nthe global tag_set. Since module init failed, null_exit() is never invoked,\nso the global tag_set's tags and maps are permanently leaked.\n\nFree the global tag_set in err_dev, matching null_exit() which does\nif (tag_set.ops) blk_mq_free_tag_set(&tag_set)."
    }
  ],
  "lastModified": "2026-09-17T17:17:13.397",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}