« Volver al listado

CVE-2022-49387

Estado: ModificadaMedia (5.5)—

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

watchdog: rzg2l_wdt: Fix 32bit overflow issue

The value of timer_cycle_us can be 0 due to 32bit overflow. For eg:- If we assign the counter value "0xfff" for computing maxval.

This patch fixes this issue by appending ULL to 1024, so that it is promoted to 64bit.

This patch also fixes the warning message, 'watchdog: Invalid min and max timeout values, resetting to 0!'.

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)

Mostrar
{
  "id": "CVE-2022-49387",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-49387",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-10-01T19:41:41.098307Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "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
      },
      {
        "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": "2cbc5cd0b55fa2310cc557c77b0665f5e00272de",
              "lessThan": "e07b9fa0dc32b492de85528caaf9f0c605d8424f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cbc5cd0b55fa2310cc557c77b0665f5e00272de",
              "lessThan": "b95a47667d34e76c2c9013f8e3b1e5039a5a0b76",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2cbc5cd0b55fa2310cc557c77b0665f5e00272de",
              "lessThan": "ea2949df22a533cdf75e4583c00b1ce94cd5a83b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/watchdog/rzg2l_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": "5.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.17.15",
              "versionType": "semver",
              "lessThanOrEqual": "5.17.*"
            },
            {
              "status": "unaffected",
              "version": "5.18.4",
              "versionType": "semver",
              "lessThanOrEqual": "5.18.*"
            },
            {
              "status": "unaffected",
              "version": "5.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/watchdog/rzg2l_wdt.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-02-26T07:01:15.343",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/b95a47667d34e76c2c9013f8e3b1e5039a5a0b76",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e07b9fa0dc32b492de85528caaf9f0c605d8424f",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ea2949df22a533cdf75e4583c00b1ce94cd5a83b",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwatchdog: rzg2l_wdt: Fix 32bit overflow issue\n\nThe value of timer_cycle_us can be 0 due to 32bit overflow.\nFor eg:- If we assign the counter value \"0xfff\" for computing\nmaxval.\n\nThis patch fixes this issue by appending ULL to 1024, so that\nit is promoted to 64bit.\n\nThis patch also fixes the warning message, 'watchdog: Invalid min and\nmax timeout values, resetting to 0!'."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: watchdog: rzg2l_wdt: soluciona el problema de desbordamiento de 32 bits El valor de timer_cycle_us puede ser 0 debido al desbordamiento de 32 bits. Por ejemplo: si asignamos el valor del contador \"0xfff\" para calcular maxval. Este parche soluciona este problema añadiendo ULL a 1024, de modo que se promueva a 64 bits. Este parche también soluciona el mensaje de advertencia, 'watchdog: Invalid min and max timeout values, resetting to 0!'."
    }
  ],
  "lastModified": "2026-06-17T05:17:54.253",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A5433C40-FA2E-4DDC-BBD9-8C7F577788FC",
              "versionEndExcluding": "5.17.15",
              "versionStartIncluding": "5.17"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FA6D643C-6D6A-4821-8A8D-B5776B8F0103",
              "versionEndExcluding": "5.18.4",
              "versionStartIncluding": "5.18"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}