CVE-2025-71118

Local kernel crash via NULL parent dereference

Published Jan 14, 2026 · Updated Jan 14, 2026

NULL pointer dereference in Linux kernel ACPICA allows local users to crash the system when a malformed DSDT yields a NULL namespace start node. The acpi_ns_get_next_node() function reads parent_node from a NULL start_node because its NULL check is nested beneath the ACPI_ROOT_OBJECT test. The condition is demonstrated on Honor Magicbook 14 Pro firmware with a bad DSDT and interrupts availability without reported data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel ACPICA allows local users to crash the system when a malformed DSDT yields a NULL namespace start node. The acpi_ns_get_next_node() function reads parent_node from a NULL start_node because its NULL check is nested beneath the ACPI_ROOT_OBJECT test. The condition is demonstrated on Honor Magicbook 14 Pro firmware with a bad DSDT and interrupts availability without reported data disclosure or modification.

The record

CVE
CVE-2025-71118
Published
Jan 14, 2026
Updated
Jan 14, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d8bb08126920fd4b12dbf32d9250757c9064b36
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1bc34293dfbd266c29875206849b4f8e8177e6df
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7f9b951ed11842373851dd3c91860778356d62d3
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9d6c58dae8f6590c746ac5d0012ffe14a77539f0
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f91dad0a3b381244183ffbea4cec5a7a69d6f41e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d8bb08126920fd4b12dbf32d9250757c9064b36; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1bc34293dfbd266c29875206849b4f8e8177e6df; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <7f9b951ed11842373851dd3c91860778356d62d3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <9d6c58dae8f6590c746ac5d0012ffe14a77539f0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <f91dad0a3b381244183ffbea4cec5a7a69d6f41e

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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