SB20260527103 - NULL pointer dereference in Linux kernel realtek rtw88 driver

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Main Vulnerability Database SB20260527103

SB20260527103 - NULL pointer dereference in Linux kernel realtek rtw88 driver

Published: May 27, 2026

Security Bulletin ID SB20260527103
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-2026-46092)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 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/E:U/U:Clear


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

The vulnerability exists due to improper handling of a NULL pointer in the rtw88 PCI probing routine when probing an 8821CE device on a root bus without an upstream PCI bridge. A local user can install or attach a device in a crafted PCI topology to cause a denial of service.

The issue is triggered only on systems where the 8821CE device is present on a root bus and no upstream PCI-to-PCI bridge exists.


Remediation

Install update from vendor's website.

References