{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "7be190e4bdd2bd1aca84afef06bb755c06a85473"
            },
            {
              "fixed": "edde62571f7602d83243ca51729ce42d22ea04d2"
            },
            {
              "fixed": "59bd9088336d2bb7e713dcf4df5cbda86bb3c611"
            },
            {
              "fixed": "85d98669fa7f1d3041d962515e45ee6e392db6f8"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.14.0"
            },
            {
              "fixed": "6.18.24"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43347.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\narm64: dts: qcom: monaco: Reserve full Gunyah metadata region\n\nWe observe spurious \"Synchronous External Abort\" exceptions\n(ESR=0x96000010) and kernel crashes on Monaco-based platforms.\nThese faults are caused by the kernel inadvertently accessing\nhypervisor-owned memory that is not properly marked as reserved.\n\n\u003eFrom boot log, The Qualcomm hypervisor reports the memory range\nat 0x91a80000 of size 0x80000 (512 KiB) as hypervisor-owned:\nqhee_hyp_assign_remove_memory: 0x91a80000/0x80000 -\u003e ret 0\n\nHowever, the EFI memory map provided by firmware only reserves the\nsubrange 0x91a40000–0x91a87fff (288 KiB). The remaining portion\n(0x91a88000–0x91afffff) is incorrectly reported as conventional\nmemory (from efi debug):\nefi:   0x000091a40000-0x000091a87fff [Reserved...]\nefi:   0x000091a88000-0x0000938fffff [Conventional...]\n\nAs a result, the allocator may hand out PFNs inside the hypervisor\nowned region, causing fatal aborts when the kernel accesses those\naddresses.\n\nAdd a reserved-memory carveout for the Gunyah hypervisor metadata\nat 0x91a80000 (512 KiB) and mark it as no-map so Linux does not\nmap or allocate from this area.\n\nFor the record:\nHyp version: gunyah-e78adb36e debug (2025-11-17 05:38:05 UTC)\nUEFI Ver: 6.0.260122.BOOT.MXF.1.0.c1-00449-KODIAKLA-1",
  "id": "CVE-2026-43347",
  "modified": "2026-08-12T03:51:17.092396976Z",
  "published": "2026-05-08T13:39:32.598Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59bd9088336d2bb7e713dcf4df5cbda86bb3c611"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85d98669fa7f1d3041d962515e45ee6e392db6f8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/edde62571f7602d83243ca51729ce42d22ea04d2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43347.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43347"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "arm64: dts: qcom: monaco: Reserve full Gunyah metadata region"
}