{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2021-41495 Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation which allows attackers to conduct DoS attacks by repetitively creating sort arrays. NOTE: While correct that validation is missing an error can only occur due to an exhaustion of memory. If the user can exhaust memory they are already privileged. Further it should be practically impossible to construct an attack which can target the memory exhaustion to occur at exactly this place - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-41495.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation which allows attackers to conduct DoS attacks by repetitively creating sort arrays. NOTE: While correct that validation is missing an error can only occur due to an exhaustion of memory. If the user can exhaust memory they are already privileged. Further it should be practically impossible to construct an attack which can target the memory exhaustion to occur at exactly this place",
    "tracking": {
      "current_release_date": "2021-12-23T00:00:00.000Z",
      "generator": {
        "date": "2025-10-19T22:29:46.218Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2021-41495",
      "initial_release_date": "2021-12-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2021-12-23T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "1.0",
                "product": {
                  "name": "CBL Mariner 1.0",
                  "product_id": "16820"
                }
              },
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccm1 numpy 1.16.6-2",
                "product": {
                  "name": "\u003ccm1 numpy 1.16.6-2",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "cm1 numpy 1.16.6-2",
                "product": {
                  "name": "cm1 numpy 1.16.6-2",
                  "product_id": "18931"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 numpy 1.22.0-1",
                "product": {
                  "name": "\u003ccbl2 numpy 1.22.0-1",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 numpy 1.22.0-1",
                "product": {
                  "name": "cbl2 numpy 1.22.0-1",
                  "product_id": "18934"
                }
              }
            ],
            "category": "product_name",
            "name": "numpy"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccm1 numpy 1.16.6-2 as a component of CBL Mariner 1.0",
          "product_id": "16820-2"
        },
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        "relates_to_product_reference": "16820"
      },
      {
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        "full_product_name": {
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        },
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        "relates_to_product_reference": "16820"
      },
      {
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        },
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        "relates_to_product_reference": "17086"
      },
      {
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        },
        "product_reference": "18934",
        "relates_to_product_reference": "17086"
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-41495",
      "cwe": {
        "id": "CWE-476",
        "name": "NULL Pointer Dereference"
      },
      "notes": [
        {
          "category": "general",
          "text": "mitre",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "18931-16820",
          "18934-17086"
        ],
        "known_affected": [
          "16820-2",
          "17086-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2021-41495 Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation which allows attackers to conduct DoS attacks by repetitively creating sort arrays. NOTE: While correct that validation is missing an error can only occur due to an exhaustion of memory. If the user can exhaust memory they are already privileged. Further it should be practically impossible to construct an attack which can target the memory exhaustion to occur at exactly this place - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2021/msrc_cve-2021-41495.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-12-23T00:00:00.000Z",
          "details": "1.16.6-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "16820-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2021-12-23T00:00:00.000Z",
          "details": "1.22.0-1:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "environmentalsScore": 0.0,
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 5.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "16820-2",
            "17086-1"
          ]
        }
      ],
      "title": "Null Pointer Dereference vulnerability exists in numpy.sort in NumPy \u0026lt and 1.19 in the PyArray_DescrNew function due to missing return-value validation which allows attackers to conduct DoS attacks by repetitively creating sort arrays. NOTE: While correct that validation is missing an error can only occur due to an exhaustion of memory. If the user can exhaust memory they are already privileged. Further it should be practically impossible to construct an attack which can target the memory exhaustion to occur at exactly this place"
    }
  ]
}