LoongArch: Add spectre boundry for syscall dispatch table

{
  "id": "f48b12b68b8efa90182c84db3245f7dff118ec8c3e2b4e8397217886ac176a60",
  "url": "https://osv.dev/vulnerability/CVE-2026-45993",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LoongArch: Add spectre boundry for syscall dispatch table",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: LoongArch: Add spectre boundry for syscall dispatch table The LoongArch syscall number is directly controlled by userspace, but does not have a array_index_nospec() boundry to prevent access past the syscall function pointer tables.",
    "evidence": "osv:CVE-2026-45993",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.176",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.140",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.12.86",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.18.27",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "7.0.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-45993",
      "aliases": [
        "CVE-2026-45993"
      ],
      "affected": [
        {
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              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
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                {
                  "fixed": "c8a8e863928424046b8fd328f02c359baa0a0c3f"
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                {
                  "fixed": "108f2cd13577a410c0ad6ea00708596d9d0dfc90"
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                {
                  "fixed": "07040904ad217545be096d4280ed33c02f6a3750"
                },
                {
                  "fixed": "85cbf7fb568af5358aae61925c4e66b8f5e1439d"
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                {
                  "fixed": "bc84a109c2082dd0c4b38e8d923c046b41977533"
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                {
                  "fixed": "0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d"
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              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45993.json"
          }
        },
        {
          "ranges": [
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              "type": "ECOSYSTEM",
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                  "introduced": "5.19.0"
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                  "fixed": "6.1.176"
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            {
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                  "introduced": "6.2.0"
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                {
                  "fixed": "6.6.140"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45993.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.855912613Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/07040904ad217545be096d4280ed33c02f6a3750",
        "https://git.kernel.org/stable/c/0c965d2784fbbd7f8e3b96d875c9cfdf7c00da3d",
        "https://git.kernel.org/stable/c/108f2cd13577a410c0ad6ea00708596d9d0dfc90",
        "https://git.kernel.org/stable/c/85cbf7fb568af5358aae61925c4e66b8f5e1439d",
        "https://git.kernel.org/stable/c/bc84a109c2082dd0c4b38e8d923c046b41977533",
        "https://git.kernel.org/stable/c/c8a8e863928424046b8fd328f02c359baa0a0c3f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45993.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-45993",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45993.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-45993",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 518201,
  "published_at": "2026-05-27T12:55:46.48+00:00"
}