{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Add spectre boundry for syscall dispatch table\n\nThe LoongArch syscall number is directly controlled by userspace, but\ndoes not have a array_index_nospec() boundry to prevent access past the\nsyscall function pointer tables."
    }
  ],
  "id": "CVE-2026-45993",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:16.853",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07040904ad217545be096d4280ed33c02f6a3750"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/108f2cd13577a410c0ad6ea00708596d9d0dfc90"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85cbf7fb568af5358aae61925c4e66b8f5e1439d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bc84a109c2082dd0c4b38e8d923c046b41977533"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-45993"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nLoongArch: Add spectre boundry for syscall dispatch table\n\nThe LoongArch syscall number is directly controlled by userspace, but\ndoes not have a array_index_nospec() boundry to prevent access past the\nsyscall function pointer tables.",
  "id": "GHSA-r2fv-v53q-68f3",
  "modified": "2026-05-27T15:33:20Z",
  "published": "2026-05-27T15:33:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45993"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07040904ad217545be096d4280ed33c02f6a3750"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/108f2cd13577a410c0ad6ea00708596d9d0dfc90"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85cbf7fb568af5358aae61925c4e66b8f5e1439d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bc84a109c2082dd0c4b38e8d923c046b41977533"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
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        "url": "https://www.first.org/tlp/"
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    "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": {
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      "contact_details": "secure@microsoft.com",
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        "url": "https://support.microsoft.com/lifecycle"
      },
      {
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        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "LoongArch: Add spectre boundry for syscall dispatch table",
    "tracking": {
      "current_release_date": "2026-05-29T01:41:19.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.829Z",
        "engine": {
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      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-28T01:12:12.000Z",
          "legacy_version": "1",
          "number": "1",
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        },
        {
          "date": "2026-05-28T14:43:17.000Z",
          "legacy_version": "1.1",
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          "legacy_version": "2",
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      ],
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    "branches": [
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              {
                "category": "product_version",
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                "product": {
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                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
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              {
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                "product": {
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                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "kernel"
          }
        ],
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        "name": "Microsoft"
      }
    ],
    "relationships": [
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          "product_id": "17084-1"
        },
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        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-45993",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
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        ]
      },
      "references": [
        {
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          "summary": "CVE-2026-45993 LoongArch: Add spectre boundry for syscall dispatch table - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45993.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-05-28T01:12:12.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
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          ]
        }
      ],
      "title": "LoongArch: Add spectre boundry for syscall dispatch table"
    }
  ]
}