gsd-2015-7550
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.
Aliases
Aliases
CVE-2015-7550


To clipboard 

{
  "GSD": {
    "alias": "CVE-2015-7550",
    "description": "The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.",
    "id": "GSD-2015-7550",
    "references": [
      "https://www.suse.com/security/cve/CVE-2015-7550.html",
      "https://www.debian.org/security/2016/dsa-3434",
      "https://ubuntu.com/security/CVE-2015-7550",
      "https://advisories.mageia.org/CVE-2015-7550.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2015-7550"
      ],
      "details": "The keyctl_read_key function in security/keys/keyctl.c in the Linux kernel before 4.3.4 does not properly use a semaphore, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted application that leverages a race condition between keyctl_revoke and keyctl_read calls.",
      "id": "GSD-2015-7550",
      "modified": "2023-12-13T01:20:01.177294Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
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        "ID": "CVE-2015-7550",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "n/a"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
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          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
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                "value": "n/a"
              }
            ]
          }
        ]
      },
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            "name": "http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00038.html",
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          },
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          },
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          },
          {
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          {
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          },
          {
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          },
          {
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            "url": "http://www.ubuntu.com/usn/USN-2890-3"
          },
          {
            "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d",
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            "url": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d"
          },
          {
            "name": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4",
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            "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4"
          },
          {
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          },
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          },
          {
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            "url": "http://www.ubuntu.com/usn/USN-2911-2"
          },
          {
            "name": "https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d",
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            "url": "https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d"
          },
          {
            "name": "https://security-tracker.debian.org/tracker/CVE-2015-7550",
            "refsource": "MISC",
            "url": "https://security-tracker.debian.org/tracker/CVE-2015-7550"
          },
          {
            "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1291197",
            "refsource": "MISC",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1291197"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "4.3.3",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2015-7550"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-362"
                },
                {
                  "lang": "en",
                  "value": "NVD-CWE-Other"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.3.4"
            },
            {
              "name": "https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d",
              "refsource": "CONFIRM",
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              "url": "https://github.com/torvalds/linux/commit/b4a1b4f5047e4f54e194681125c74c0aa64d637d"
            },
            {
              "name": "https://security-tracker.debian.org/tracker/CVE-2015-7550",
              "refsource": "CONFIRM",
              "tags": [],
              "url": "https://security-tracker.debian.org/tracker/CVE-2015-7550"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1291197",
              "refsource": "CONFIRM",
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            {
              "name": "http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b4a1b4f5047e4f54e194681125c74c0aa64d637d",
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            {
              "name": "SUSE-SU-2016:2074",
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            },
            {
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              "refsource": "BID",
              "tags": [],
              "url": "http://www.securityfocus.com/bid/79903"
            },
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              "tags": [],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html"
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              "tags": [],
              "url": "http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html"
            },
            {
              "name": "USN-2911-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2911-1"
            },
            {
              "name": "USN-2890-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2890-1"
            },
            {
              "name": "USN-2890-3",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2890-3"
            },
            {
              "name": "USN-2890-2",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2890-2"
            },
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              "name": "USN-2888-1",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2888-1"
            },
            {
              "name": "USN-2911-2",
              "refsource": "UBUNTU",
              "tags": [],
              "url": "http://www.ubuntu.com/usn/USN-2911-2"
            },
            {
              "name": "DSA-3434",
              "refsource": "DEBIAN",
              "tags": [],
              "url": "http://www.debian.org/security/2016/dsa-3434"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 4.9,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 6.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM"
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2017-11-04T01:29Z",
      "publishedDate": "2016-02-08T03:59Z"
    }
  }
}


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