« Volver al listado

CVE-2026-68374

Estado: RecibidaAlta (7.8)—

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

usb: core: sysfs: add lock to bos_descriptors_read()

Add a lock to the function bos_descriptors_read().

This function accesses udev->bos, which could be simultaneously freed in usb_reset_and_verify_device(), a function that is commonly called in drivers all over the kernel.

CVSS

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local (AV:L/PR:L) que permite escalada de privilegios mediante race condition en manejo de memoria USB del kernel. Acceso local sin interacción del usuario. Impactos: DoS por liberación de memoria y corrupción de datos de descriptores.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

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-2026-68374",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "12fc84e8c4288cc8ed5f14a35e077130c2cfece2",
              "lessThan": "c07caee449c968842a350bfefa049889923b8240",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "12fc84e8c4288cc8ed5f14a35e077130c2cfece2",
              "lessThan": "217774e143d7b5a88739193284b6421be3978601",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "12fc84e8c4288cc8ed5f14a35e077130c2cfece2",
              "lessThan": "ab82adf5e63b2d89ead7933ab753b9cedbe028e9",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "12fc84e8c4288cc8ed5f14a35e077130c2cfece2",
              "lessThan": "4e0197fbb0eec588795d5431716a244d9ac8fa93",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/core/sysfs.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.9",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.101",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/core/sysfs.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:30.313",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/217774e143d7b5a88739193284b6421be3978601",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4e0197fbb0eec588795d5431716a244d9ac8fa93",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ab82adf5e63b2d89ead7933ab753b9cedbe028e9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c07caee449c968842a350bfefa049889923b8240",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: core: sysfs: add lock to bos_descriptors_read()\n\nAdd a lock to the function bos_descriptors_read().\n\nThis function accesses udev->bos, which could be simultaneously freed in\nusb_reset_and_verify_device(), a function that is commonly called in\ndrivers all over the kernel."
    }
  ],
  "lastModified": "2026-08-18T07:16:51.780",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}