gsd-2018-12232
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat's execution, leading to a NULL pointer dereference and system crash.
Aliases
Aliases
CVE-2018-12232


To clipboard 

{
  "GSD": {
    "alias": "CVE-2018-12232",
    "description": "In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat\u0027s execution, leading to a NULL pointer dereference and system crash.",
    "id": "GSD-2018-12232",
    "references": [
      "https://www.suse.com/security/cve/CVE-2018-12232.html",
      "https://access.redhat.com/errata/RHSA-2018:2948",
      "https://ubuntu.com/security/CVE-2018-12232",
      "https://alas.aws.amazon.com/cve/html/CVE-2018-12232.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2018-12232"
      ],
      "details": "In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat\u0027s execution, leading to a NULL pointer dereference and system crash.",
      "id": "GSD-2018-12232",
      "modified": "2023-12-13T01:22:30.375395Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2018-12232",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
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              "vendor_name": "n/a"
            }
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          }
        ]
      },
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          {
            "name": "USN-3752-2",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3752-2/"
          },
          {
            "name": "USN-3752-3",
            "refsource": "UBUNTU",
            "url": "https://usn.ubuntu.com/3752-3/"
          },
          {
            "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14",
            "refsource": "MISC",
            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=6d8c50dcb029872b298eea68cc6209c866fd3e14"
          },
          {
            "name": "https://patchwork.ozlabs.org/patch/926519/",
            "refsource": "MISC",
            "url": "https://patchwork.ozlabs.org/patch/926519/"
          },
          {
            "name": "RHSA-2018:2948",
            "refsource": "REDHAT",
            "url": "https://access.redhat.com/errata/RHSA-2018:2948"
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          {
            "name": "https://lkml.org/lkml/2018/6/5/14",
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            "url": "https://lkml.org/lkml/2018/6/5/14"
          },
          {
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            "refsource": "BID",
            "url": "http://www.securityfocus.com/bid/104453"
          },
          {
            "name": "USN-3752-1",
            "refsource": "UBUNTU",
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          },
          {
            "name": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14",
            "refsource": "MISC",
            "url": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.17.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-12232"
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        "data_version": "4.0",
        "description": {
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            {
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              "value": "In net/socket.c in the Linux kernel through 4.17.1, there is a race condition between fchownat and close in cases where they target the same socket file descriptor, related to the sock_close and sockfs_setattr functions. fchownat does not increment the file descriptor reference count, which allows close to set the socket to NULL during fchownat\u0027s execution, leading to a NULL pointer dereference and system crash."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-362"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://patchwork.ozlabs.org/patch/926519/",
              "refsource": "MISC",
              "tags": [
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              "url": "https://patchwork.ozlabs.org/patch/926519/"
            },
            {
              "name": "https://lkml.org/lkml/2018/6/5/14",
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              "url": "https://lkml.org/lkml/2018/6/5/14"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/6d8c50dcb029872b298eea68cc6209c866fd3e14",
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            },
            {
              "name": "104453",
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              ],
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            {
              "name": "USN-3752-2",
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            },
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              "refsource": "UBUNTU",
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              "url": "https://usn.ubuntu.com/3752-3/"
            },
            {
              "name": "RHSA-2018:2948",
              "refsource": "REDHAT",
              "tags": [],
              "url": "https://access.redhat.com/errata/RHSA-2018:2948"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "MEDIUM",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 7.1,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 8.6,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 2.2,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2018-10-31T10:30Z",
      "publishedDate": "2018-06-12T12:29Z"
    }
  }
}


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