« Volver al listado

CVE-2026-90130

Estado: RecibidaSin puntuar—

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

vdpa_sim: fix cleanup after worker creation failure

vdpasim_create() leaves vdpasim->worker as an ERR_PTR when kthread_run_worker() fails. The error path then drops the device reference, which releases the partially initialized simulator.

vdpasim_free() unconditionally passes the worker pointer to kthread_destroy_worker(), so the ERR_PTR is dereferenced and can trigger a general protection fault.

Store the worker error, clear the pointer, and only clean up the worker when it was successfully initialized. Also make the release path tolerate partially initialized objects by guarding virtqueue and IOTLB cleanup, since the same release path can be reached from other initialization failures.

Leer descripción completaMostrar menos

I found this bug myself, though the patch was written with AI assistance.

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-2026-90130",
  "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": "76acfa7bc54f1e3b9dde396e0a3534493419fd6f",
              "lessThan": "feafa109f031ed111f7f968e447c13985db498e0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "76acfa7bc54f1e3b9dde396e0a3534493419fd6f",
              "lessThan": "05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "76acfa7bc54f1e3b9dde396e0a3534493419fd6f",
              "lessThan": "68b726b3a01fb02a68843781b17d05ef3d759987",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "76acfa7bc54f1e3b9dde396e0a3534493419fd6f",
              "lessThan": "ca6f3fa599cb764518df595368b743f856fdb516",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "76acfa7bc54f1e3b9dde396e0a3534493419fd6f",
              "lessThan": "bd670e5dfd2b01fd9692f61fa1456434c54026a4",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/vdpa/vdpa_sim/vdpa_sim.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "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/vdpa/vdpa_sim/vdpa_sim.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:05.493",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/68b726b3a01fb02a68843781b17d05ef3d759987",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/bd670e5dfd2b01fd9692f61fa1456434c54026a4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ca6f3fa599cb764518df595368b743f856fdb516",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/feafa109f031ed111f7f968e447c13985db498e0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvdpa_sim: fix cleanup after worker creation failure\n\nvdpasim_create() leaves vdpasim->worker as an ERR_PTR when\nkthread_run_worker() fails. The error path then drops the device\nreference, which releases the partially initialized simulator.\n\nvdpasim_free() unconditionally passes the worker pointer to\nkthread_destroy_worker(), so the ERR_PTR is dereferenced and can trigger\na general protection fault.\n\nStore the worker error, clear the pointer, and only clean up the worker\nwhen it was successfully initialized. Also make the release path tolerate\npartially initialized objects by guarding virtqueue and IOTLB cleanup,\nsince the same release path can be reached from other initialization\nfailures.\n\nI found this bug myself, though the patch was written with AI assistance."
    }
  ],
  "lastModified": "2026-09-17T17:17:05.493",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}