{
  "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-2026-31658 net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-31658.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": "net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()",
    "tracking": {
      "current_release_date": "2026-05-01T14:44:48.000Z",
      "generator": {
        "date": "2026-05-05T07:38:18.928Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-31658",
      "initial_release_date": "2026-04-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-04-26T01:09:54.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-04-27T14:39:02.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2026-04-29T01:05:16.000Z",
          "legacy_version": "2",
          "number": "3",
          "summary": "Information published."
        },
        {
          "date": "2026-04-29T01:47:26.000Z",
          "legacy_version": "3",
          "number": "4",
          "summary": "Information published."
        },
        {
          "date": "2026-04-29T14:45:41.000Z",
          "legacy_version": "4",
          "number": "5",
          "summary": "Information published."
        },
        {
          "date": "2026-05-01T14:44:48.000Z",
          "legacy_version": "5",
          "number": "6",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "6"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              },
              {
                "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",
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                "product": {
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              },
              {
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                "product": {
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                  "product_id": "21248"
                }
              },
              {
                "category": "product_version_range",
                "name": "cbl2 kernel 0:5.15.202.1-1.cbl2",
                "product": {
                  "name": "cbl2 kernel 0:5.15.202.1-1.cbl2",
                  "product_id": "3"
                }
              }
            ],
            "category": "product_name",
            "name": "kernel"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.130.1-3.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-2"
        },
        "product_reference": "2",
        "relates_to_product_reference": "17084"
      },
      {
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        },
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        "relates_to_product_reference": "17084"
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      {
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        },
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        "relates_to_product_reference": "17084"
      },
      {
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        "full_product_name": {
          "name": "cbl2 kernel 0:5.15.202.1-1.cbl2 as a component of CBL Mariner 2.0",
          "product_id": "17086-3"
        },
        "product_reference": "3",
        "relates_to_product_reference": "17086"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-31658",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "fixed": [
          "21248-17084"
        ],
        "known_affected": [
          "17084-2",
          "17084-1",
          "17086-3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-31658 net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit() - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-31658.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-04-26T01:09:54.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-2"
          ]
        },
        {
          "category": "none_available",
          "date": "2026-04-26T01:09:54.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17086-3"
          ]
        },
        {
          "category": "vendor_fix",
          "date": "2026-04-26T01:09:54.000Z",
          "details": "0:6.6.137.1-1.azl3:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
          "product_ids": [
            "17084-1"
          ],
          "url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
        }
      ],
      "title": "net: altera-tse: fix skb leak on DMA mapping error in tse_start_xmit()"
    }
  ]
}