fkie_cve-2021-47016
Vulnerability from fkie_nvd
Published
2024-02-29 23:15
Modified
2025-01-09 19:52
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: m68k: mvme147,mvme16x: Don't wipe PCC timer config bits Don't clear the timer 1 configuration bits when clearing the interrupt flag and counter overflow. As Michael reported, "This results in no timer interrupts being delivered after the first. Initialization then hangs in calibrate_delay as the jiffies counter is not updated." On mvme16x, enable the timer after requesting the irq, consistent with mvme147.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293daePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1dfb26df15fc7036a74221d43de7427f74293daePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "459F61B2-E7E5-43BE-8A31-15469C31F827",
              "versionEndExcluding": "5.4.119",
              "versionStartIncluding": "5.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "7A4CF5D6-ACBA-4980-ABFD-3D7A53B5BB4E",
              "versionEndExcluding": "5.10.37",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8CBB94EC-EC33-4464-99C5-03E5542715F0",
              "versionEndExcluding": "5.11.21",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D8C7052F-1B7B-4327-9C2B-84EBF3243838",
              "versionEndExcluding": "5.12.4",
              "versionStartIncluding": "5.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nm68k: mvme147,mvme16x: Don\u0027t wipe PCC timer config bits\n\nDon\u0027t clear the timer 1 configuration bits when clearing the interrupt flag\nand counter overflow. As Michael reported, \"This results in no timer\ninterrupts being delivered after the first. Initialization then hangs\nin calibrate_delay as the jiffies counter is not updated.\"\n\nOn mvme16x, enable the timer after requesting the irq, consistent with\nmvme147."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: m68k: mvme147,mvme16x: No borre los bits de configuraci\u00f3n del temporizador PCC. No borre los bits de configuraci\u00f3n del temporizador 1 al borrar el indicador de interrupci\u00f3n y el desbordamiento del contador. Como inform\u00f3 Michael, \"Esto da como resultado que no se entreguen interrupciones del temporizador despu\u00e9s de la primera. Luego, la inicializaci\u00f3n se bloquea en calibrate_delay porque el contador de santiam\u00e9n no se actualiza\". En mvme16x, habilite el temporizador despu\u00e9s de solicitar irq, de acuerdo con mvme147."
    }
  ],
  "id": "CVE-2021-47016",
  "lastModified": "2025-01-09T19:52:27.117",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2024-02-29T23:15:07.307",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/43262178c043032e7c42d00de44c818ba05f9967"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/5d34225169346cab5145978d153b9ce90e9ace21"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/73fdeb612d25b5e105c219e05434285a45d23576"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/f6a90818a32058fca62cda3a2027a6a2364e1878"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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