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CVE-2025-40127

Estado: AplazadaSin puntuar—

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

hwrng: ks-sa - fix division by zero in ks_sa_rng_init

Fix division by zero in ks_sa_rng_init caused by missing clock pointer initialization. The clk_get_rate() call is performed on an uninitialized clk pointer, resulting in division by zero when calculating delay values.

Add clock initialization code before using the clock.

drivers/char/hw_random/ks-sa-rng.c | 7 +++++++ 1 file changed, 7 insertions(+)

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)

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{
  "id": "CVE-2025-40127",
  "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": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "692a04a1e0cde1d80a33df0078c755cf02cd7268",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "d76b099011fa056950f63d05ebb6160991242f6a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "eec7e0e19c1fa75dc65e25aa6a21ef24a03849af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "f4238064379a91e71a9c258996acac43c50c2094",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6d01d8511dceb9cd40f72eb102b7d24f0b2e997b",
              "lessThan": "612b1dfeb414dfa780a6316014ceddf9a74ff5c0",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/char/hw_random/ks-sa-rng.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.246",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.195",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.156",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/char/hw_random/ks-sa-rng.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-11-12T11:15:42.290",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2b6bcce32cb5aff84588a844a4d3f6dd5353b8e2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/55a70e1de75e5ff5f961c79a2cdc6a4468cc2bf2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/612b1dfeb414dfa780a6316014ceddf9a74ff5c0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/692a04a1e0cde1d80a33df0078c755cf02cd7268",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d76b099011fa056950f63d05ebb6160991242f6a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/eec7e0e19c1fa75dc65e25aa6a21ef24a03849af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f4238064379a91e71a9c258996acac43c50c2094",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nhwrng: ks-sa - fix division by zero in ks_sa_rng_init\n\nFix division by zero in ks_sa_rng_init caused by missing clock\npointer initialization. The clk_get_rate() call is performed on\nan uninitialized clk pointer, resulting in division by zero when\ncalculating delay values.\n\nAdd clock initialization code before using the clock.\n\n\n drivers/char/hw_random/ks-sa-rng.c | 7 +++++++\n 1 file changed, 7 insertions(+)"
    }
  ],
  "lastModified": "2026-06-17T09:21:18.640",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}