fkie_cve-2022-49815
Vulnerability from fkie_nvd
Published
2025-05-01 15:16
Modified
2025-11-07 18:50
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: erofs: fix missing xas_retry() in fscache mode The xarray iteration only holds the RCU read lock and thus may encounter XA_RETRY_ENTRY if there's process modifying the xarray concurrently. This will cause oops when referring to the invalid entry. Fix this by adding the missing xas_retry(), which will make the iteration wind back to the root node if XA_RETRY_ENTRY is encountered.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/37020bbb71d911431e16c2c940b97cf86ae4f2f6Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dbc98fe99e17ed18f2f272d5fe880d844b1c68c3Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1


To clipboard 

{
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    {
      "nodes": [
        {
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              "matchCriteriaId": "34351652-9335-4383-BE7F-D0AA497D8C41",
              "versionEndExcluding": "6.0.10",
              "versionStartIncluding": "5.19",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nerofs: fix missing xas_retry() in fscache mode\n\nThe xarray iteration only holds the RCU read lock and thus may encounter\nXA_RETRY_ENTRY if there\u0027s process modifying the xarray concurrently.\nThis will cause oops when referring to the invalid entry.\n\nFix this by adding the missing xas_retry(), which will make the\niteration wind back to the root node if XA_RETRY_ENTRY is encountered."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: erofs: se corrige la falta de xas_retry() en el modo fscache. La iteraci\u00f3n del array x solo mantiene el bloqueo de lectura de la RCU y, por lo tanto, puede encontrar XA_RETRY_ENTRY si hay un proceso que modifica el array x simult\u00e1neamente. Esto causar\u00e1 errores al hacer referencia a la entrada no v\u00e1lida. Se soluciona a\u00f1adiendo la falta de xas_retry(), lo que har\u00e1 que la iteraci\u00f3n regrese al nodo ra\u00edz si se encuentra XA_RETRY_ENTRY."
    }
  ],
  "id": "CVE-2022-49815",
  "lastModified": "2025-11-07T18:50:07.070",
  "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": "2025-05-01T15:16:04.893",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/37020bbb71d911431e16c2c940b97cf86ae4f2f6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/dbc98fe99e17ed18f2f272d5fe880d844b1c68c3"
    }
  ],
  "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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