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CVE-2026-68256

Estado: RecibidaSin puntuar—

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

drm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference

(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)

Detalles técnicos trazas, registros y código del informe original
prev_sink is unconditionally retained via dc_sink_retain at function
  entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT
  returns false without releasing prev_sink. All other return paths in the
  function correctly call dc_sink_release(prev_sink), making this the only
  missing cleanup.

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-2026-68256",
  "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": "54618888d1ea7a26f8bccfb89e3c2420350c8047",
              "lessThan": "f9922828a4ebd26286fbe0286cc61695e7d9b07b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047",
              "lessThan": "a59e493567d18ef3858be9368acd132a01ebfa09",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047",
              "lessThan": "4ee77643e6194f2deb62fe62f04396f9825e27d8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047",
              "lessThan": "58ea24dd96848626039296e9e8510270ec8dc4bf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "54618888d1ea7a26f8bccfb89e3c2420350c8047",
              "lessThan": "a6e14b976be48eebd8769cb5b883a6af7fc5ade1",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/link/link_detection.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.3",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.148",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "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/gpu/drm/amd/display/dc/link/link_detection.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:14.250",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4ee77643e6194f2deb62fe62f04396f9825e27d8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/58ea24dd96848626039296e9e8510270ec8dc4bf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a59e493567d18ef3858be9368acd132a01ebfa09",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a6e14b976be48eebd8769cb5b883a6af7fc5ade1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f9922828a4ebd26286fbe0286cc61695e7d9b07b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amd/display: detect_link_and_local_sink: DP alt mode timeout path leaks prev_sink reference\n\nprev_sink is unconditionally retained via dc_sink_retain at function\n  entry, but the DP alt mode timeout path inside SIGNAL_TYPE_DISPLAY_PORT\n  returns false without releasing prev_sink. All other return paths in the\n  function correctly call dc_sink_release(prev_sink), making this the only\n  missing cleanup.\n\n(cherry picked from commit 45510cf662dcf46b5d8926d454f338809f107b9d)"
    }
  ],
  "lastModified": "2026-08-17T05:18:27.913",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}