SB20260727358 - NULL pointer dereference in Linux kernel acpi driver

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB20260727358

SB20260727358 - NULL pointer dereference in Linux kernel acpi driver

Published: July 27, 2026

Security Bulletin ID SB20260727358
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2026-64227)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper handling of a NULL pointer in ACPI platform driver probe handlers when probing a platform device without an ACPI companion object. A local user can force a platform driver to match a device that does not match its device ID list to cause a denial of service.

The issue affects core ACPI-related platform drivers and can be triggered through driver override behavior.


Remediation

Install update from vendor's website.

References