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CVE-2025-68314

Estado: AplazadaAlta (8.8)—

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

drm/msm: make sure last_fence is always updated

Update last_fence in the vm-bind path instead of kernel managed path.

last_fence is used to wait for work to finish in vm_bind contexts but not used for kernel managed contexts.

This fixes a bug where last_fence is not waited on context close leading to faults as resources are freed while in use.

Patchwork: https://patchwork.freedesktop.org/patch/680080/

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) en kernel Linux que permite escalada de privilegios o DoS por uso de memoria no sincronizada; falta de sincronización en last_fence causa fallos al liberar recursos.

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-2025-68314",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
      }
    ]
  },
  "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": "92395af63a9958615edfa9d4ef1ea72c92a00410",
              "lessThan": "8ee817ceafba266d9c6f3a09babd2ac7441d9a2b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "92395af63a9958615edfa9d4ef1ea72c92a00410",
              "lessThan": "86404a9e3013d814a772ac407573be5d3cd4ee0d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem_submit.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem_submit.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-16T16:16:10.983",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/86404a9e3013d814a772ac407573be5d3cd4ee0d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8ee817ceafba266d9c6f3a09babd2ac7441d9a2b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: make sure last_fence is always updated\n\nUpdate last_fence in the vm-bind path instead of kernel managed path.\n\nlast_fence is used to wait for work to finish in vm_bind contexts but not\nused for kernel managed contexts.\n\nThis fixes a bug where last_fence is not waited on context close leading\nto faults as resources are freed while in use.\n\nPatchwork: https://patchwork.freedesktop.org/patch/680080/"
    }
  ],
  "lastModified": "2026-07-30T06:24:37.847",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}