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CVE-2026-80596

Estado: RecibidaAlta (8.4)—

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

Input: ims-pcu - only expose sysfs attributes on control interface

When the driver was converted to use the driver core to instantiate device attributes (via .dev_groups in the usb_driver structure), the attributes started appearing on all interfaces bound to the driver. Since the ims-pcu driver manually claims the secondary data interface during probe, the driver core automatically creates the sysfs attributes for that interface as well.

However, the driver only supports these attributes on the primary control interface. Data interfaces lack the necessary descriptors and internal state to handle these requests, and accessing them can lead to unexpected behavior or crashes.

Leer descripción completaMostrar menos

Fix this by updating the is_visible() callbacks for both the main and OFN attribute groups to verify that the interface being accessed is indeed the control interface.

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 sin interacción en kernel Linux (AV:L, UI:N, PR:N). Acceso a atributos sysfs en interfaz de datos no controlada causa comportamiento inesperado o crashes (DoS). Escalada de privilegios potencial mediante manipulación de estado interno.

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)

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{
  "id": "CVE-2026-80596",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.4,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "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": "204d18a7a0c67352857dee1bbac517ed63f01d8e",
              "lessThan": "7d5e7c8d48f0aaeb9ec90a9a4f450f3c5e422431",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "204d18a7a0c67352857dee1bbac517ed63f01d8e",
              "lessThan": "87e2f89dea078572fb9e13864cec2b1bd8e89b71",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "204d18a7a0c67352857dee1bbac517ed63f01d8e",
              "lessThan": "73e6687be0c1c323a8ec5b733f29440a93e08ff2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "204d18a7a0c67352857dee1bbac517ed63f01d8e",
              "lessThan": "001428ea4d2c371107cb984108e266adf99f1f1e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/input/misc/ims-pcu.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/input/misc/ims-pcu.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-28T08:16:43.320",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/001428ea4d2c371107cb984108e266adf99f1f1e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/73e6687be0c1c323a8ec5b733f29440a93e08ff2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7d5e7c8d48f0aaeb9ec90a9a4f450f3c5e422431",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/87e2f89dea078572fb9e13864cec2b1bd8e89b71",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nInput: ims-pcu - only expose sysfs attributes on control interface\n\nWhen the driver was converted to use the driver core to instantiate device\nattributes (via .dev_groups in the usb_driver structure), the attributes\nstarted appearing on all interfaces bound to the driver. Since the ims-pcu\ndriver manually claims the secondary data interface during probe, the\ndriver core automatically creates the sysfs attributes for that interface\nas well.\n\nHowever, the driver only supports these attributes on the primary control\ninterface. Data interfaces lack the necessary descriptors and internal\nstate to handle these requests, and accessing them can lead to unexpected\nbehavior or crashes.\n\nFix this by updating the is_visible() callbacks for both the main and OFN\nattribute groups to verify that the interface being accessed is indeed the\ncontrol interface."
    }
  ],
  "lastModified": "2026-08-29T07:16:44.620",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}