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CVE-2026-68346

Estado: RecibidaSin puntuar—

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

ALSA: hda: cs35l41: validate and free ACPI mute object

cs35l41_get_acpi_mute_state() evaluates a _DSM method to get the ACPI mute state and reads the first byte from the returned object.

However, the returned ACPI object is owned by the caller and is never freed after use, so each successful query leaks the _DSM result object.

The code also assumes that the returned object is a buffer with at least one byte. A malformed firmware response can return a different object type or an empty buffer, and the direct ret->buffer.pointer dereference can then access an invalid pointer.

Leer descripción completaMostrar menos

Use the typed _DSM helper, validate that the returned buffer contains at least one byte, and free the ACPI object after reading it.

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-2026-68346",
  "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": "447106e92a0c86c332d40710436f38f64c322cd6",
              "lessThan": "7fea0c89ed39a13d9a31163a74f8c62de30a4ffc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "447106e92a0c86c332d40710436f38f64c322cd6",
              "lessThan": "08433c71f15984ddd5f5a307cf3f0aa9b84583aa",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "447106e92a0c86c332d40710436f38f64c322cd6",
              "lessThan": "d5dfdf43259ad9d054052012095b1630e7366dcf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "447106e92a0c86c332d40710436f38f64c322cd6",
              "lessThan": "3b597d24dc0455ae926f1053f97c2725038fc3cd",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/hda/codecs/side-codecs/cs35l41_hda.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.7"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.7",
              "versionType": "semver"
            },
            {
              "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": [
            "sound/hda/codecs/side-codecs/cs35l41_hda.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:25.207",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/08433c71f15984ddd5f5a307cf3f0aa9b84583aa",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3b597d24dc0455ae926f1053f97c2725038fc3cd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7fea0c89ed39a13d9a31163a74f8c62de30a4ffc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d5dfdf43259ad9d054052012095b1630e7366dcf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: hda: cs35l41: validate and free ACPI mute object\n\ncs35l41_get_acpi_mute_state() evaluates a _DSM method to get the ACPI\nmute state and reads the first byte from the returned object.\n\nHowever, the returned ACPI object is owned by the caller and is never\nfreed after use, so each successful query leaks the _DSM result object.\n\nThe code also assumes that the returned object is a buffer with at least\none byte. A malformed firmware response can return a different object\ntype or an empty buffer, and the direct ret->buffer.pointer dereference\ncan then access an invalid pointer.\n\nUse the typed _DSM helper, validate that the returned buffer contains at\nleast one byte, and free the ACPI object after reading it."
    }
  ],
  "lastModified": "2026-08-17T06:17:42.827",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}