CVE-2026-10659

{
  "id": "CVE-2026-10659",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-07T13:16:29.043",
  "lastModified": "2026-10-25T20:10:00.147",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Dhara flash translation layer disk driver (drivers/disk/ftl_dhara.c) implemented the dhara_nand_ callbacks so that, on a flash error, the error code was written unconditionally through the caller-supplied dhara_error_t err pointer (e.g. *err = DHARA_E_ECC in dhara_nand_read, and similar in dhara_nand_erase/prog/copy).\n\nThe upstream Dhara library calls these callbacks with err == NULL along its journal-resume binary search: find_last_checkblock() invokes find_checkblock(j, mid, &found, NULL), which forwards the NULL pointer into dhara_nand_read(). This path runs during disk_ftl_access_init() -> dhara_map_resume() whenever the FTL disk is mounted/initialised.\n\nIf a flash read error (uncorrectable ECC, bad block, controller error) occurs on one of the probed checkpoint pages, the driver dereferences and writes to NULL, faulting the kernel (denial of service). The trigger is conditioned on the NAND medium content/health, which can be influenced by media wear, induced faults, or a corrupted/crafted on-flash image.\n\nThe fix routes all error assignments through the library's NULL-safe dhara_set_error() helper. Affects Zephyr v4.4.0, where the driver was introduced."
    },
    {
      "lang": "es",
      "value": "El controlador de disco de la capa de traducción flash Dhara (drivers/disk/ftl_dhara.c) implementó las retrollamadas dhara_nand_ de modo que, ante un error de flash, el código de error se escribía incondicionalmente a través del puntero dhara_error_t err proporcionado por el llamador (p. ej., err = DHARA_E_ECC en dhara_nand_read, y similar en dhara_nand_erase/prog/copy). La biblioteca Dhara ascendente llama a estas retrollamadas con err == NULL a lo largo de su búsqueda binaria de reanudación de diario: find_last_checkblock() invoca find_checkblock(j, mid, &found, NULL), que reenvía el puntero NULL a dhara_nand_read(). Esta ruta se ejecuta durante disk_ftl_access_init()   ->   dhara_map_resume() cada vez que el disco FTL se monta/inicializa. Si ocurre un error de lectura de flash (ECC incorregible, bloque defectuoso, error de controlador) en una de las páginas de punto de control sondeadas, el controlador desreferencia y escribe en NULL, provocando un fallo en el kernel (denegación de servicio). El disparador está condicionado por el contenido/estado del medio NAND, que puede ser influenciado por el desgaste del medio, fallos inducidos o una imagen en flash corrupta/manipulada. La solución encamina todas las asignaciones de error a través de la función auxiliar dhara_set_error() de la biblioteca, que es segura frente a NULL. Afecta a Zephyr v4.4.0, donde se introdujo el controlador."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "zephyrproject",
          "product": "zephyr",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
          "packageName": "zephyr",
          "programFiles": [
            "drivers/disk/ftl_dhara.c"
          ],
          "versions": [
            {
              "version": "4.4.0",
              "lessThan": "4.4.2",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
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        "exploitabilityScore": 1.0,
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        "type": "Primary",
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          "confidentialityImpact": "NONE",
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-07T13:24:10.256609Z",
          "id": "CVE-2026-10659",
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  "weaknesses": [
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      "source": "[email protected]",
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      "description": [
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          "lang": "en",
          "value": "CWE-476"
        }
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  "references": [
    {
      "url": "https://github.com/zephyrproject-rtos/zephyr/commit/a8371b0d4719efe37a66e2abb618ad9b81792212",
      "source": "[email protected]",
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      "source": "[email protected]",
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}