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CVE-2025-68237

Estado: AplazadaSin puntuar—

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

mtdchar: fix integer overflow in read/write ioctls

The "req.start" and "req.len" variables are u64 values that come from the user at the start of the function. We mask away the high 32 bits of "req.len" so that's capped at U32_MAX but the "req.start" variable can go up to U64_MAX which means that the addition can still integer overflow.

Use check_add_overflow() to fix this bug.

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-2025-68237",
  "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": "6420ac0af95dbcb2fd8452e2d551ab50e1bbad83",
              "lessThan": "f37efdd97fd1ec3e0d0f1eec279c8279e28f981e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6420ac0af95dbcb2fd8452e2d551ab50e1bbad83",
              "lessThan": "457376c6fbf0c69326a9bf1f72416225f681192b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6420ac0af95dbcb2fd8452e2d551ab50e1bbad83",
              "lessThan": "eb9361484814fb12f3b7544b33835ea67d7a6a97",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6420ac0af95dbcb2fd8452e2d551ab50e1bbad83",
              "lessThan": "37944f4f8199cd153fef74e95ca268020162f212",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6420ac0af95dbcb2fd8452e2d551ab50e1bbad83",
              "lessThan": "e4185bed738da755b191aa3f2e16e8b48450e1b8",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/mtd/mtdchar.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.118",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.60",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.10",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/mtd/mtdchar.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-16T14:15:58.850",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/37944f4f8199cd153fef74e95ca268020162f212",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/457376c6fbf0c69326a9bf1f72416225f681192b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e4185bed738da755b191aa3f2e16e8b48450e1b8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eb9361484814fb12f3b7544b33835ea67d7a6a97",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f37efdd97fd1ec3e0d0f1eec279c8279e28f981e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmtdchar: fix integer overflow in read/write ioctls\n\nThe \"req.start\" and \"req.len\" variables are u64 values that come from the\nuser at the start of the function.  We mask away the high 32 bits of\n\"req.len\" so that's capped at U32_MAX but the \"req.start\" variable can go\nup to U64_MAX which means that the addition can still integer overflow.\n\nUse check_add_overflow() to fix this bug."
    }
  ],
  "lastModified": "2026-06-17T09:58:47.010",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}