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CVE-2023-53856

Estado: AplazadaSin puntuar—

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

of: overlay: Call of_changeset_init() early

When of_overlay_fdt_apply() fails, the changeset may be partially applied, and the caller is still expected to call of_overlay_remove() to clean up this partial state.

However, of_overlay_apply() calls of_resolve_phandles() before init_overlay_changeset(). Hence if the overlay fails to apply due to an unresolved symbol, the overlay_changeset.cset.entries list is still uninitialized, and cleanup will crash with a NULL-pointer dereference in overlay_removal_is_ok().

Fix this by moving the call to of_changeset_init() from init_overlay_changeset() to of_overlay_fdt_apply(), where all other early initialization is done.

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-2023-53856",
  "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": "f948d6d8b792bb90041edc12eac35faf83030994",
              "lessThan": "01bb96ad38089f5cc6de7746dac13437d35eb1dc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f948d6d8b792bb90041edc12eac35faf83030994",
              "lessThan": "3fb210cd521c9efcb211e9f5ce40fc907200bf13",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f948d6d8b792bb90041edc12eac35faf83030994",
              "lessThan": "be86241bf5d1efd16d8a7231c13b33459c5d755d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f948d6d8b792bb90041edc12eac35faf83030994",
              "lessThan": "c403c81b577a67fe9ec6a2e89d143256487be50f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f948d6d8b792bb90041edc12eac35faf83030994",
              "lessThan": "a9515ff4fb142b690a0d2b58782b15903b990dba",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/of/overlay.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.132",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.4.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "status": "unaffected",
              "version": "6.5.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.5.*"
            },
            {
              "status": "unaffected",
              "version": "6.6",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/of/overlay.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-09T16:17:26.283",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/01bb96ad38089f5cc6de7746dac13437d35eb1dc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3fb210cd521c9efcb211e9f5ce40fc907200bf13",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a9515ff4fb142b690a0d2b58782b15903b990dba",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/be86241bf5d1efd16d8a7231c13b33459c5d755d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c403c81b577a67fe9ec6a2e89d143256487be50f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: overlay: Call of_changeset_init() early\n\nWhen of_overlay_fdt_apply() fails, the changeset may be partially\napplied, and the caller is still expected to call of_overlay_remove() to\nclean up this partial state.\n\nHowever, of_overlay_apply() calls of_resolve_phandles() before\ninit_overlay_changeset().  Hence if the overlay fails to apply due to an\nunresolved symbol, the overlay_changeset.cset.entries list is still\nuninitialized, and cleanup will crash with a NULL-pointer dereference in\noverlay_removal_is_ok().\n\nFix this by moving the call to of_changeset_init() from\ninit_overlay_changeset() to of_overlay_fdt_apply(), where all other\nearly initialization is done."
    }
  ],
  "lastModified": "2026-06-17T06:46:11.587",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}