FKIE_CVE-2021-46920

Vulnerability from fkie_nvd - Published: 2024-02-27 07:15 - Updated: 2024-11-21 06:34
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback Current code blindly writes over the SWERR and the OVERFLOW bits. Write back the bits actually read instead so the driver avoids clobbering the OVERFLOW bit that comes after the register is read.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/02981a44a0e402089775416371bd2e0c935685f8Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553dPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ea941ac294d75d0ace50797aebf0056f6f8f7a7fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "10B30767-6251-4101-9C1B-5F61DBAFA43A",
              "versionEndExcluding": "5.10.32",
              "versionStartIncluding": "5.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3C5242B9-B5BD-4578-AD66-69DF59D54A14",
              "versionEndExcluding": "5.11.16",
              "versionStartIncluding": "5.11.0",
              "vulnerable": true
            }
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          "negate": false,
          "operator": "OR"
        }
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    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback\n\nCurrent code blindly writes over the SWERR and the OVERFLOW bits. Write\nback the bits actually read instead so the driver avoids clobbering the\nOVERFLOW bit that comes after the register is read."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: dmaengine: idxd: corrige el problema del bit de desbordamiento SWERR en la reescritura El c\u00f3digo actual escribe ciegamente sobre los bits SWERR y OVERFLOW. En su lugar, vuelva a escribir los bits realmente le\u00eddos para que el controlador evite da\u00f1ar el bit OVERFLOW que viene despu\u00e9s de leer el registro."
    }
  ],
  "id": "CVE-2021-46920",
  "lastModified": "2024-11-21T06:34:56.077",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
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        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-02-27T07:15:08.987",
  "references": [
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      "tags": [
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    },
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      "url": "https://git.kernel.org/stable/c/a5ad12d5d69c63af289a37f05187a0c6fe93553d"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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