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CVE-2026-90334

Estado: RecibidaSin puntuar—

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

tty: clear cdev pointer after cdev_add() failure

tty_cdev_add() drops the cdev reference when cdev_add() fails, but leaves driver->cdevs[index] pointing to freed memory. tty_unregister_device() later passes that stale pointer to cdev_del(), causing a use-after-free.

Clear the slot after dropping the reference.

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)

Mostrar
{
  "id": "CVE-2026-90334",
  "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": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "fb1de260033c215dba438973d82b48562bdc86bb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "e9e64dd02fd68776afda00777591eca0c3984285",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "33a44333a9dfda044b0e233399b12ead7f8a90ae",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "d331c63570af61ef7aaf516b64a8d6f47518a3a4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "a83fcddf3c75d004f12aa13555bb73da19fb75a9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c1a752ba2d6b8a52879c7ab637cff38359ea9827",
              "lessThan": "4f6bd79bb7e55095f09bec9b4eb6c09df1306116",
              "versionType": "git"
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              "lessThan": "6645856f0df3aeecd45519cb611415b4b89c2223",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/tty/tty_io.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.3",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "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/tty/tty_io.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:31.937",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/33a44333a9dfda044b0e233399b12ead7f8a90ae",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4f6bd79bb7e55095f09bec9b4eb6c09df1306116",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5c5a795bf6248fe96f96dd9fd79d66bbb4a92077",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6645856f0df3aeecd45519cb611415b4b89c2223",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a83fcddf3c75d004f12aa13555bb73da19fb75a9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d331c63570af61ef7aaf516b64a8d6f47518a3a4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e9e64dd02fd68776afda00777591eca0c3984285",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fb1de260033c215dba438973d82b48562bdc86bb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntty: clear cdev pointer after cdev_add() failure\n\ntty_cdev_add() drops the cdev reference when cdev_add() fails, but\nleaves driver->cdevs[index] pointing to freed memory.\ntty_unregister_device() later passes that stale pointer to cdev_del(),\ncausing a use-after-free.\n\nClear the slot after dropping the reference."
    }
  ],
  "lastModified": "2026-09-17T17:17:31.937",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}