gsd-2023-0160
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
A deadlock flaw was found in the Linux kernel’s BPF subsystem. This flaw allows a local user to potentially crash the system.
Aliases
Aliases
CVE-2023-0160


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-0160",
    "id": "GSD-2023-0160"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-0160"
      ],
      "details": "A deadlock flaw was found in the Linux kernel\u2019s BPF subsystem. This flaw allows a local user to potentially crash the system.",
      "id": "GSD-2023-0160",
      "modified": "2023-12-13T01:20:22.473832Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
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        "ID": "CVE-2023-0160",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
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                    "product_name": "kernel",
                    "version": {
                      "version_data": [
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                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            },
            {
              "product": {
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                    "version": {
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                  },
                  {
                    "product_name": "Red Hat Enterprise Linux 9",
                    "version": {
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              "vendor_name": "Fedora"
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        }
      },
      "credits": [
        {
          "lang": "en",
          "value": "Red Hat would like to thank Hsin-Wei Hung (University of California, Irvine) for reporting this issue."
        }
      ],
      "data_format": "MITRE",
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      "data_version": "4.0",
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 4.7,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
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                "cweId": "CWE-833",
                "lang": "eng",
                "value": "Deadlock"
              }
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        ]
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          "lang": "en",
          "value": "The default Red Hat Enterprise Linux kernel prevents unprivileged users from being able to use eBPF by the kernel.unprivileged_bpf_disabled sysctl.   \n\nThis would require a privileged user with CAP_SYS_ADMIN or root to be able to abuse this flaw reducing its attack space.\n\nFor the Red Hat Enterprise Linux 7 the eBPF for unprivileged users is always disabled.\nFor the Red Hat Enterprise Linux 8 or 9 to confirm the current state, inspect the sysctl with the command:\n\n# cat /proc/sys/kernel/unprivileged_bpf_disabled\n\nThe setting of 1 would mean that unprivileged users cannot use eBPF, mitigating the flaw.\n\nA kernel update will be required to mitigate the flaw for the root or users with CAP_SYS_ADMIN capabilities.\n\nNote: A fix for this CVE may be backported as a part of one of the future BPF subsystem rebases."
        }
      ]
    },
    "nvd.nist.gov": {
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              }
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          "impactScore": 3.6
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      },
      "lastModifiedDate": "2023-07-27T19:48Z",
      "publishedDate": "2023-07-18T17:15Z"
    }
  }
}


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