msrc_cve-2025-4516
Vulnerability from csaf_microsoft
Published
2025-05-02 00:00
Modified
2025-07-18 00:00
Summary
Use-after-free in "unicode_escape" decoder with error handler

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
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.


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{
  "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-2025-4516 Use-after-free in \"unicode_escape\" decoder with error handler - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-4516.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": "Use-after-free in \"unicode_escape\" decoder with error handler",
    "tracking": {
      "current_release_date": "2025-07-18T00:00:00.000Z",
      "generator": {
        "date": "2025-10-20T03:18:58.601Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-4516",
      "initial_release_date": "2025-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-07-11T00:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2025-07-18T00:00:00.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "Added python3 to CBL-Mariner 2.0\nAdded python3 to Azure Linux 3.0"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "2.0",
                "product": {
                  "name": "CBL Mariner 2.0",
                  "product_id": "17086"
                }
              },
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 python3 3.9.19-14",
                "product": {
                  "name": "\u003ccbl2 python3 3.9.19-14",
                  "product_id": "3"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 python3 3.9.19-14",
                "product": {
                  "name": "cbl2 python3 3.9.19-14",
                  "product_id": "19533"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003cazl3 python3 3.12.9-2",
                "product": {
                  "name": "\u003cazl3 python3 3.12.9-2",
                  "product_id": "2"
                }
              },
              {
                "category": "product_version",
                "name": "azl3 python3 3.12.9-2",
                "product": {
                  "name": "azl3 python3 3.12.9-2",
                  "product_id": "19601"
                }
              },
              {
                "category": "product_version_range",
                "name": "\u003ccbl2 python3 3.9.19-13",
                "product": {
                  "name": "\u003ccbl2 python3 3.9.19-13",
                  "product_id": "1"
                }
              },
              {
                "category": "product_version",
                "name": "cbl2 python3 3.9.19-13",
                "product": {
                  "name": "cbl2 python3 3.9.19-13",
                  "product_id": "19681"
                }
              }
            ],
            "category": "product_name",
            "name": "python3"
          },
          {
            "category": "product_name",
            "name": "azl3 tensorflow 2.16.1-9",
            "product": {
              "name": "azl3 tensorflow 2.16.1-9",
              "product_id": "4"
            }
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 python3 3.9.19-14 as a component of CBL Mariner 2.0",
          "product_id": "17086-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
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          "product_id": "19533-17086"
        },
        "product_reference": "19533",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003cazl3 python3 3.12.9-2 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 python3 3.12.9-2 as a component of Azure Linux 3.0",
          "product_id": "19601-17084"
        },
        "product_reference": "19601",
        "relates_to_product_reference": "17084"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "\u003ccbl2 python3 3.9.19-13 as a component of CBL Mariner 2.0",
          "product_id": "17086-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "cbl2 python3 3.9.19-13 as a component of CBL Mariner 2.0",
          "product_id": "19681-17086"
        },
        "product_reference": "19681",
        "relates_to_product_reference": "17086"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 tensorflow 2.16.1-9 as a component of Azure Linux 3.0",
          "product_id": "17084-4"
        },
        "product_reference": "4",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-4516",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "flags": [
        {
          "label": "component_not_present",
          "product_ids": [
            "17084-4"
          ]
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "PSF",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "19533-17086",
          "19601-17084",
          "19681-17086"
        ],
        "known_affected": [
          "17086-3",
          "17084-2",
          "17086-1"
        ],
        "known_not_affected": [
          "17084-4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-4516 Use-after-free in \"unicode_escape\" decoder with error handler - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2025/msrc_cve-2025-4516.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-07-11T00:00:00.000Z",
          "details": "3.9.19-14:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17086-3",
            "17086-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        },
        {
          "category": "vendor_fix",
          "date": "2025-07-11T00:00:00.000Z",
          "details": "3.12.9-2:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-2"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "title": "Use-after-free in \"unicode_escape\" decoder with error handler"
    }
  ]
}


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