SB2026081538 - Type Confusion in Linux kernel realtek rtw89 driver
Published: August 15, 2026
Security Bulletin ID
SB2026081538
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Type Confusion (CVE-ID: CVE-2026-74413)
CWE-ID: CWE-843 - Type confusion
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 type handling in rtw89 PCI AER handlers when handling PCI error recovery events. A local user can trigger the affected error-handling paths to cause a denial of service.
The issue affects the io_error_detected() and io_resume() handlers, which retrieve driver data as the wrong pointer type and operate on incorrect structure offsets.
Remediation
Install update from vendor's website.