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CVE-2026-97969

Estado: RecibidaSin puntuar—

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

watchdog: msc313e: Fix clock leak and spurious timer in settimeout()

msc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which introduces two severe bugs:

Factor out the register-writing logic into a helper function. Only call it in settimeout() if the watchdog is running. Otherwise, simply update `wdev->timeout`.

Detalles técnicos trazas, registros y código del informe original
1. If the watchdog is already active, calling start() again will
   increase the reference count of the clock again.  However stop() is
   only called once, the reference count is unbalance.
2. If the watchdog is stopped, calling settimeout() will start
   the hardware timer accidentally.

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-2026-97969",
  "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": "e9800b7994642a794afd4894f072541c14277ce8",
              "lessThan": "68665016c7b777b44e27b6b0c1e6524c28ebe40a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e9800b7994642a794afd4894f072541c14277ce8",
              "lessThan": "77ef2aa8b46876ca9935f32dd874c517ccf5d880",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e9800b7994642a794afd4894f072541c14277ce8",
              "lessThan": "a1dd0817776ea2a870ba2347001af13ddd4cb321",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e9800b7994642a794afd4894f072541c14277ce8",
              "lessThan": "2152a13ee2a9af09a668ebd053a8dbf771dadb80",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e9800b7994642a794afd4894f072541c14277ce8",
              "lessThan": "2abf99a57b0b71b2b97745981f4039370ab78044",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "faf1eb2895c87a8c0fb920439dddc7e0d97c6a69",
              "versionType": "git"
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            {
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              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/watchdog/msc313e_wdt.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.14",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/watchdog/msc313e_wdt.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-25T11:17:24.767",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2152a13ee2a9af09a668ebd053a8dbf771dadb80",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2abf99a57b0b71b2b97745981f4039370ab78044",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3db30f315935c2fb0d95f46b7a593b5b4d3ec3d0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/68665016c7b777b44e27b6b0c1e6524c28ebe40a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/77ef2aa8b46876ca9935f32dd874c517ccf5d880",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a1dd0817776ea2a870ba2347001af13ddd4cb321",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/faf1eb2895c87a8c0fb920439dddc7e0d97c6a69",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: msc313e: Fix clock leak and spurious timer in settimeout()\n\nmsc313e_wdt_settimeout() unconditionally calls msc313e_wdt_start() which\nintroduces two severe bugs:\n\n1. If the watchdog is already active, calling start() again will\n   increase the reference count of the clock again.  However stop() is\n   only called once, the reference count is unbalance.\n2. If the watchdog is stopped, calling settimeout() will start\n   the hardware timer accidentally.\n\nFactor out the register-writing logic into a helper function.  Only call\nit in settimeout() if the watchdog is running.  Otherwise, simply update\n`wdev->timeout`."
    }
  ],
  "lastModified": "2026-10-03T11:18:21.597",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}