FKIE_CVE-2023-6531

Vulnerability from fkie_nvd - Published: 2024-01-21 10:15 - Updated: 2026-08-06 22:16
Summary
A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector's deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on.
Impacted products

{
  "affected": [
    {
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          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream",
            "cpe:/a:redhat:enterprise_linux:9::crb",
            "cpe:/a:redhat:enterprise_linux:9::nfv",
            "cpe:/a:redhat:enterprise_linux:9::realtime",
            "cpe:/o:redhat:enterprise_linux:9::baseos"
          ],
          "defaultStatus": "affected",
          "packageName": "kernel",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:5.14.0-427.13.1.el9_4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/a:redhat:enterprise_linux:9::appstream",
            "cpe:/a:redhat:enterprise_linux:9::crb",
            "cpe:/a:redhat:enterprise_linux:9::nfv",
            "cpe:/a:redhat:enterprise_linux:9::realtime",
            "cpe:/o:redhat:enterprise_linux:9::baseos"
          ],
          "defaultStatus": "affected",
          "packageName": "kernel",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat",
          "versions": [
            {
              "lessThan": "*",
              "status": "unaffected",
              "version": "0:5.14.0-427.13.1.el9_4",
              "versionType": "rpm"
            }
          ]
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:6"
          ],
          "defaultStatus": "unaffected",
          "packageName": "kernel",
          "product": "Red Hat Enterprise Linux 6",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "kernel",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7"
          ],
          "defaultStatus": "unaffected",
          "packageName": "kernel-rt",
          "product": "Red Hat Enterprise Linux 7",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "packageName": "kernel",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "defaultStatus": "unaffected",
          "packageName": "kernel-rt",
          "product": "Red Hat Enterprise Linux 8",
          "vendor": "Red Hat"
        },
        {
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "defaultStatus": "affected",
          "packageName": "kernel-rt",
          "product": "Red Hat Enterprise Linux 9",
          "vendor": "Red Hat"
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "668F5607-E136-4E8E-86F2-316E9DC41ADC",
              "versionEndExcluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*",
              "matchCriteriaId": "3A0038DE-E183-4958-A6E3-CE3821FEAFBF",
              "vulnerable": true
            },
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              "matchCriteriaId": "5C78EDA4-8BE6-42FC-9512-49032D525A55",
              "vulnerable": true
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          "negate": false,
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      ]
    },
    {
      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
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              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use-after-free flaw was found in the Linux Kernel due to a race problem in the unix garbage collector\u0027s deletion of SKB races with unix_stream_read_generic() on the socket that the SKB is queued on."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una falla de use-after-free en el kernel de Linux debido a un problema de ejecuci\u00f3n en la eliminaci\u00f3n de ejecuci\u00f3n de SKB por parte del recolector de basura de Unix con unix_stream_read_generic() en el socket en el que el SKB est\u00e1 en cola."
    }
  ],
  "id": "CVE-2023-6531",
  "lastModified": "2026-08-06T22:16:38.510",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "secalert@redhat.com",
        "type": "Secondary"
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          "availabilityImpact": "HIGH",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-01-23T16:22:59.245640Z",
          "version": "2.0.3"
        }
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    ]
  },
  "published": "2024-01-21T10:15:07.967",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2024:2394"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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    },
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      "tags": [
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      "url": "http://packetstormsecurity.com/files/176533/Linux-Broken-Unix-GC-Interaction-Use-After-Free.html"
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-362"
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      "type": "Secondary"
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          "value": "CWE-362"
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      "source": "nvd@nist.gov",
      "type": "Secondary"
    }
  ]
}



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