FKIE_CVE-2025-38277

Vulnerability from fkie_nvd - Published: 2025-07-10 08:15 - Updated: 2025-11-03 18:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: mtd: nand: ecc-mxic: Fix use of uninitialized variable ret If ctx->steps is zero, the loop processing ECC steps is skipped, and the variable ret remains uninitialized. It is later checked and returned, which leads to undefined behavior and may cause unpredictable results in user space or kernel crashes. This scenario can be triggered in edge cases such as misconfigured geometry, ECC engine misuse, or if ctx->steps is not validated after initialization. Initialize ret to zero before the loop to ensure correct and safe behavior regardless of the ctx->steps value. Found by Linux Verification Center (linuxtesting.org) with SVACE.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/49482f4a39620f6afedcd3f6aa9e0d558b6a460b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4d9d6e4be09472aa72953caca3dbefdc27846170
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7a23cc510ecaabab4f6df7e9d910d16e279b72ad
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a0d9d9b5a4634e146ae41cb25667322e5c7d74d2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d95846350aac72303036a70c4cdc69ae314aa26d
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: nand: ecc-mxic: Fix use of uninitialized variable ret\n\nIf ctx-\u003esteps is zero, the loop processing ECC steps is skipped,\nand the variable ret remains uninitialized. It is later checked\nand returned, which leads to undefined behavior and may cause\nunpredictable results in user space or kernel crashes.\n\nThis scenario can be triggered in edge cases such as misconfigured\ngeometry, ECC engine misuse, or if ctx-\u003esteps is not validated\nafter initialization.\n\nInitialize ret to zero before the loop to ensure correct and safe\nbehavior regardless of the ctx-\u003esteps value.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: nand: ecc-mxic: Se corrige el uso de la variable ret sin inicializar. Si ctx-\u0026gt;steps es cero, se omite el procesamiento del bucle de pasos ECC y la variable ret permanece sin inicializar. Posteriormente, se verifica y se devuelve, lo que genera un comportamiento indefinido y puede causar resultados impredecibles en el espacio de usuario o fallos del kernel. Este escenario puede activarse en casos extremos, como una geometr\u00eda mal configurada, un uso indebido del motor ECC o si ctx-\u0026gt;steps no se valida tras la inicializaci\u00f3n. Inicialice ret a cero antes del bucle para garantizar un comportamiento correcto y seguro, independientemente del valor de ctx-\u0026gt;steps. Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con SVACE."
    }
  ],
  "id": "CVE-2025-38277",
  "lastModified": "2025-11-03T18:16:11.937",
  "metrics": {},
  "published": "2025-07-10T08:15:26.003",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/49482f4a39620f6afedcd3f6aa9e0d558b6a460b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4d9d6e4be09472aa72953caca3dbefdc27846170"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7a23cc510ecaabab4f6df7e9d910d16e279b72ad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a0d9d9b5a4634e146ae41cb25667322e5c7d74d2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d95846350aac72303036a70c4cdc69ae314aa26d"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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