CVE-2026-68258

Estado: RecibidaAlta (7.1)—

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

drm/amdkfd: Check bounds on CRIU restore queue type and mqd size

We weren't checking whether the values provided in the private data in kfd CRIU restore were within bounds.

For queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided type is less than it.

For mqd_size, add new function mqd_size_from_queue_type and confirm that the provided mqd_size matches expectations.

(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 7.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.16%
Percentil entre todas las CVEs puntuadas: 5
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1005 Data from Local Systemcollection70 %
Impacto secundarioT1499.004 Application or System Exploitationimpact65 %

Vulnerabilidad local sin validación de límites en CRIU restore (AV:L/PR:L) permite escalada. Acceso a memoria del kernel (C:H) y DoS (A:H) por desbordamiento de búfer o lectura no autorizada.

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 Program Filter Network Traffic Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux Kernel^AI

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-68258",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.1,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "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": "42c6c48214b726c30918e8dc80e2168607d13ae4",
              "lessThan": "fd1691ec62701c982ea32e749678988c67fd4c21",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "42c6c48214b726c30918e8dc80e2168607d13ae4",
              "lessThan": "cc10a5839756982504ee8568fc1e1625962ab7f8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "42c6c48214b726c30918e8dc80e2168607d13ae4",
              "lessThan": "47ea05f246bebc81c7796f56265cffd812cf0601",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h",
            "drivers/gpu/drm/amd/amdkfd/kfd_priv.h",
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.18"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.18",
              "versionType": "semver"
            },
            {
              "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/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c",
            "drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.h",
            "drivers/gpu/drm/amd/amdkfd/kfd_priv.h",
            "drivers/gpu/drm/amd/amdkfd/kfd_process_queue_manager.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:14.483",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/47ea05f246bebc81c7796f56265cffd812cf0601",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cc10a5839756982504ee8568fc1e1625962ab7f8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fd1691ec62701c982ea32e749678988c67fd4c21",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Check bounds on CRIU restore queue type and mqd size\n\nWe weren't checking whether the values provided in the private\ndata in kfd CRIU restore were within bounds.\n\nFor queue type, add a KFD_QUEUE_TYPE_MAX and ensure the provided\ntype is less than it.\n\nFor mqd_size, add new function mqd_size_from_queue_type and confirm\nthat the provided mqd_size matches expectations.\n\n(cherry picked from commit f19d8086f6644083c913d70bfdeee20e1b6f46a5)"
    }
  ],
  "lastModified": "2026-08-18T07:16:51.497",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}