CVE-2025-71118 (GCVE-0-2025-71118)

Vulnerability from cvelistv5 – Published: 2026-01-14 15:06 – Updated: 2026-01-14 15:06
VLAI?
Title
ACPICA: Avoid walking the Namespace if start_node is NULL
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPICA: Avoid walking the Namespace if start_node is NULL Although commit 0c9992315e73 ("ACPICA: Avoid walking the ACPI Namespace if it is not there") fixed the situation when both start_node and acpi_gbl_root_node are NULL, the Linux kernel mainline now still crashed on Honor Magicbook 14 Pro [1]. That happens due to the access to the member of parent_node in acpi_ns_get_next_node(). The NULL pointer dereference will always happen, no matter whether or not the start_node is equal to ACPI_ROOT_OBJECT, so move the check of start_node being NULL out of the if block. Unfortunately, all the attempts to contact Honor have failed, they refused to provide any technical support for Linux. The bad DSDT table's dump could be found on GitHub [2]. DMI: HONOR FMB-P/FMB-P-PCB, BIOS 1.13 05/08/2025 [ rjw: Subject adjustment, changelog edits ]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 7f9b951ed11842373851dd3c91860778356d62d3 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 1bc34293dfbd266c29875206849b4f8e8177e6df (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 0d8bb08126920fd4b12dbf32d9250757c9064b36 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f91dad0a3b381244183ffbea4cec5a7a69d6f41e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 9d6c58dae8f6590c746ac5d0012ffe14a77539f0 (git)
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    Linux Linux Unaffected: 6.1.160 , ≤ 6.1.* (semver)
Unaffected: 6.6.120 , ≤ 6.6.* (semver)
Unaffected: 6.12.64 , ≤ 6.12.* (semver)
Unaffected: 6.18.3 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc1 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "drivers/acpi/acpica/nswalk.c"
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      "cpeApplicability": [
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPICA: Avoid walking the Namespace if start_node is NULL\n\nAlthough commit 0c9992315e73 (\"ACPICA: Avoid walking the ACPI Namespace\nif it is not there\") fixed the situation when both start_node and\nacpi_gbl_root_node are NULL, the Linux kernel mainline now still crashed\non Honor Magicbook 14 Pro [1].\n\nThat happens due to the access to the member of parent_node in\nacpi_ns_get_next_node().  The NULL pointer dereference will always\nhappen, no matter whether or not the start_node is equal to\nACPI_ROOT_OBJECT, so move the check of start_node being NULL\nout of the if block.\n\nUnfortunately, all the attempts to contact Honor have failed, they\nrefused to provide any technical support for Linux.\n\nThe bad DSDT table\u0027s dump could be found on GitHub [2].\n\nDMI: HONOR FMB-P/FMB-P-PCB, BIOS 1.13 05/08/2025\n\n[ rjw: Subject adjustment, changelog edits ]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-14T15:06:05.861Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        },
        {
          "url": "https://git.kernel.org/stable/c/9d6c58dae8f6590c746ac5d0012ffe14a77539f0"
        }
      ],
      "title": "ACPICA: Avoid walking the Namespace if start_node is NULL",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-71118",
    "datePublished": "2026-01-14T15:06:05.861Z",
    "dateReserved": "2026-01-13T15:30:19.654Z",
    "dateUpdated": "2026-01-14T15:06:05.861Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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