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 ]

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/0d8bb08126920fd4b12dbf32d9250757c9064b36 cve-icon cve-icon
https://git.kernel.org/stable/c/1bc34293dfbd266c29875206849b4f8e8177e6df cve-icon cve-icon
https://git.kernel.org/stable/c/7f9b951ed11842373851dd3c91860778356d62d3 cve-icon cve-icon
https://git.kernel.org/stable/c/9d6c58dae8f6590c746ac5d0012ffe14a77539f0 cve-icon cve-icon
https://git.kernel.org/stable/c/f91dad0a3b381244183ffbea4cec5a7a69d6f41e cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2026011415-CVE-2025-71118-1a69@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-71118 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-71118 cve-icon
History

Thu, 15 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Wed, 14 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Description 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 ]
Title ACPICA: Avoid walking the Namespace if start_node is NULL
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-01-15T07:53:05.907Z

Reserved: 2026-01-13T15:30:19.654Z

Link: CVE-2025-71118

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-14T15:16:01.483

Modified: 2026-01-14T16:25:12.057

Link: CVE-2025-71118

cve-icon Redhat

Severity : Low

Publid Date: 2026-01-14T00:00:00Z

Links: CVE-2025-71118 - Bugzilla