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CVE-2026-97446

Estado: RecibidaSin puntuar—

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

ACPICA: Fix NULL pointer dereference in acpi_ns_custom_package()

acpi_ns_custom_package() unconditionally dereferences the first element of the package to read the _BIX version number, without checking for NULL:

When firmware returns a _BIX package whose first element is an unresolvable reference, ACPICA evaluates that entry to NULL. acpi_ns_remove_null_elements() does not strip NULL entries for ACPI_PTYPE_CUSTOM packages (fixed-position format would break if elements were shifted), so acpi_ns_custom_package() sees the NULL and causes a crash.

Leer descripción completaMostrar menos

Add a NULL check for the first element (version field) before dereferencing it. The caller then receives AE_AML_OPERAND_TYPE instead of crashing.

Detalles técnicos trazas, registros y código del informe original
    if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER)

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)

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{
  "id": "CVE-2026-97446",
  "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": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "fad537538cdfcdc51e41db61bbf9ebe5ed9427eb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "9936507ac0f2379787a2a805b11ab1cf0f241372",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "644888605f55395e6012ed43e3ed643ef7ab5013",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "08c5dee5da1d8d99b5a4e94db5a3d873c491771e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "3762c6c8ae5073892d7cec736cc54270c7c9ce90",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "3cbf096a478f4fa03953f0685ad28c9c82ce67cb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7952d40240855932de01bbe81c02bf1416ec91d8",
              "lessThan": "f8d14b7bb0063bbbd86c0e4d73edb8cea7b362bc",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/acpi/acpica/nsprepkg.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.7",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/acpi/acpica/nsprepkg.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-24T17:17:22.880",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08c5dee5da1d8d99b5a4e94db5a3d873c491771e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3762c6c8ae5073892d7cec736cc54270c7c9ce90",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3cbf096a478f4fa03953f0685ad28c9c82ce67cb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/644888605f55395e6012ed43e3ed643ef7ab5013",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9936507ac0f2379787a2a805b11ab1cf0f241372",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f8d14b7bb0063bbbd86c0e4d73edb8cea7b362bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fad537538cdfcdc51e41db61bbf9ebe5ed9427eb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Fix NULL pointer dereference in acpi_ns_custom_package()\n\nacpi_ns_custom_package() unconditionally dereferences the first element\nof the package to read the _BIX version number, without checking for\nNULL:\n\n    if ((*Elements)->Common.Type != ACPI_TYPE_INTEGER)\n\nWhen firmware returns a _BIX package whose first element is an\nunresolvable reference, ACPICA evaluates that entry to NULL.\nacpi_ns_remove_null_elements() does not strip NULL entries for\nACPI_PTYPE_CUSTOM packages (fixed-position format would break if\nelements were shifted), so acpi_ns_custom_package() sees the NULL\nand causes a crash.\n\nAdd a NULL check for the first element (version field) before\ndereferencing it. The caller then receives AE_AML_OPERAND_TYPE\ninstead of crashing."
    }
  ],
  "lastModified": "2026-10-03T11:17:56.300",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}