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CVE-2024-56771

Estado: ModificadaMedia (5.5)—

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

mtd: spinand: winbond: Fix 512GW, 01GW, 01JW and 02JW ECC information

These four chips: * W25N512GW * W25N01GW * W25N01JW * W25N02JW all require a single bit of ECC strength and thus feature an on-die Hamming-like ECC engine. There is no point in filling a ->get_status() callback for them because the main ECC status bytes are located in standard places, and retrieving the number of bitflips in case of corrected chunk is both useless and unsupported (if there are bitflips, then there is 1 at most, so no need to query the chip for that).

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Without this change, a kernel warning triggers every time a bit flips.

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2024-56771",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-56771",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-10-01T19:56:51.708254Z"
        }
      }
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    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": "6a804fb72de56d6a99b799f565ae45f2cec7cd55",
              "lessThan": "234d5f75c3ae911b52c5e4442b8a87fbbd129836",
              "versionType": "git"
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              "lessThan": "fee9b240916df82a8b07aef0fdfe96785417a164",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/mtd/nand/spi/winbond.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": "6.12.4",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/mtd/nand/spi/winbond.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-01-08T18:15:17.777",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/234d5f75c3ae911b52c5e4442b8a87fbbd129836",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fee9b240916df82a8b07aef0fdfe96785417a164",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtd: spinand: winbond: Fix 512GW, 01GW, 01JW and 02JW ECC information\n\nThese four chips:\n* W25N512GW\n* W25N01GW\n* W25N01JW\n* W25N02JW\nall require a single bit of ECC strength and thus feature an on-die\nHamming-like ECC engine. There is no point in filling a ->get_status()\ncallback for them because the main ECC status bytes are located in\nstandard places, and retrieving the number of bitflips in case of\ncorrected chunk is both useless and unsupported (if there are bitflips,\nthen there is 1 at most, so no need to query the chip for that).\n\nWithout this change, a kernel warning triggers every time a bit flips."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: mtd: spinand: winbond: Corrige la información ECC de 512GW, 01GW, 01JW y 02JW Estos cuatro chips: * W25N512GW * W25N01GW * W25N01JW * W25N02JW requieren un solo bit de fuerza ECC y, por lo tanto, cuentan con un motor ECC tipo Hamming en la matriz. No tiene sentido completar una devolución de llamada ->get_status() para ellos porque los bytes de estado ECC principales se encuentran en lugares estándar, y recuperar el número de bitflips en caso de un fragmento corregido es inútil y no tiene soporte (si hay bitflips, entonces hay 1 como máximo, por lo que no es necesario consultar al chip para eso). Sin este cambio, se activa una advertencia del kernel cada vez que se cambia un bit."
    }
  ],
  "lastModified": "2026-06-17T08:12:57.197",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "04756810-D093-4B43-B1D9-CF5035968061",
              "versionEndExcluding": "6.12.4",
              "versionStartIncluding": "6.7"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}