fkie_cve-2022-48699
Vulnerability from fkie_nvd
Published
2024-05-03 16:15
Modified
2025-09-19 14:48
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: sched/debug: fix dentry leak in update_sched_domain_debugfs Kuyo reports that the pattern of using debugfs_remove(debugfs_lookup()) leaks a dentry and with a hotplug stress test, the machine eventually runs out of memory. Fix this up by using the newly created debugfs_lookup_and_remove() call instead which properly handles the dentry reference counting logic.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c32a93963e03c03e561d5a066eedad211880ba3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26e9a1ded8923510e5529fbb28390b22228700c2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2e406596571659451f4b95e37ddfd5a8ef1d0dcPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0c32a93963e03c03e561d5a066eedad211880ba3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/26e9a1ded8923510e5529fbb28390b22228700c2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c2e406596571659451f4b95e37ddfd5a8ef1d0dcPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0
linux linux_kernel 6.0


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CB9606F3-B693-4AF9-AE14-7C060C3444C2",
              "versionEndExcluding": "5.15.68",
              "versionStartIncluding": "5.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionStartIncluding": "5.16",
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            {
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          "negate": false,
          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsched/debug: fix dentry leak in update_sched_domain_debugfs\n\nKuyo reports that the pattern of using debugfs_remove(debugfs_lookup())\nleaks a dentry and with a hotplug stress test, the machine eventually\nruns out of memory.\n\nFix this up by using the newly created debugfs_lookup_and_remove() call\ninstead which properly handles the dentry reference counting logic."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sched/debug: corrige la fuga de dentry en update_sched_domain_debugfs Kuyo informa que el patr\u00f3n de uso de debugfs_remove(debugfs_lookup()) pierde un dentry y con una prueba de estr\u00e9s de conexi\u00f3n en caliente, la m\u00e1quina eventualmente se queda sin memoria. Solucione este problema utilizando la llamada debugfs_lookup_and_remove() reci\u00e9n creada, que maneja adecuadamente la l\u00f3gica de conteo de referencias de dentry."
    }
  ],
  "id": "CVE-2022-48699",
  "lastModified": "2025-09-19T14:48:17.707",
  "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": "2024-05-03T16:15:08.453",
  "references": [
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      "tags": [
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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