« Volver al listado

CVE-2026-89737

Estado: RecibidaSin puntuar—

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

usb: typec: thunderbolt: Disable work before freeing tbt on remove

tbt_altmode_remove() drops the plug and cable references without draining tbt->work. The work function dereferences those references, and can also requeue itself in its error path. The VDM callbacks can queue the same work item.

Disable and drain tbt->work before dropping the references. This waits for an existing invocation and prevents subsequent schedule_work() calls from queueing it during teardown.

This issue was found by an in-house static analysis tool and confirmed by manual code review.

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-2026-89737",
  "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": "100e257386595b3f1865ca8a991e2ba74f9701ff",
              "lessThan": "ebb840d982a612261cfc8a7687735a140c6c7024",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "100e257386595b3f1865ca8a991e2ba74f9701ff",
              "lessThan": "0a25484fe22f621e151367a59a82330a22ac80bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "100e257386595b3f1865ca8a991e2ba74f9701ff",
              "lessThan": "92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/altmodes/thunderbolt.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/altmodes/thunderbolt.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:20:04.240",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0a25484fe22f621e151367a59a82330a22ac80bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/92090f6ff2acc81e9dd99881dcfb4f8c1bdaabd3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ebb840d982a612261cfc8a7687735a140c6c7024",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: thunderbolt: Disable work before freeing tbt on remove\n\ntbt_altmode_remove() drops the plug and cable references without\ndraining tbt->work. The work function dereferences those references,\nand can also requeue itself in its error path. The VDM callbacks can\nqueue the same work item.\n\nDisable and drain tbt->work before dropping the references. This waits\nfor an existing invocation and prevents subsequent schedule_work()\ncalls from queueing it during teardown.\n\nThis issue was found by an in-house static analysis tool and confirmed\nby manual code review."
    }
  ],
  "lastModified": "2026-09-11T20:20:04.240",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}