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    "aggregate_severity": {
      "text": "Critical"
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    "csaf_version": "2.0",
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      "text": "TuxCare License Agreement",
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      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
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        "text": "CVE-2026-40393: fix unbounded stack allocation sized from shader input in the\n  SPIR-V and NIR front ends",
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      "initial_release_date": "2026-10-28T08:59:54Z",
      "revision_history": [
        {
          "date": "2026-10-28T08:59:54Z",
          "number": "1",
          "summary": "Initial version"
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      "version": "1"
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        "product_reference": "mesa-libglapi-0:18.3.4-12.el7_9.tuxcare.els1.i686",
        "relates_to_product_reference": "Red-Hat-7"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-40393",
      "cwe": {
        "id": "CWE-787",
        "name": "Out-of-bounds Write"
      },
      "notes": [
        {
          "category": "description",
          "text": "In Mesa before 25.3.6 and 26 before 26.0.1, out-of-bounds memory access can occur in WebGPU because the amount of to-be-allocated data depends on an untrusted party, and is then used for alloca.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-40393"
        },
        {
          "category": "external",
          "summary": "https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39866",
          "url": "https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39866"
        },
        {
          "category": "external",
          "summary": "https://lists.freedesktop.org/archives/mesa-dev/2026-February/226597.html",
          "url": "https://lists.freedesktop.org/archives/mesa-dev/2026-February/226597.html"
        },
        {
          "category": "external",
          "summary": "https://lists.debian.org/debian-lts-announce/2026/07/msg00021.html",
          "url": "https://lists.debian.org/debian-lts-announce/2026/07/msg00021.html"
        }
      ],
      "release_date": "2026-04-12T19:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-10-28T08:58:35.414421Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1793177914",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        }
      ]
    }
  ]
}