SB20260917150 - Improper initialization in Linux kernel amd amdgpu driver
Published: September 17, 2026
Security Bulletin ID
SB20260917150
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Partial DoS
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper initialization (CVE-ID: CVE-2026-89813)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper initialization in KIQ ring fence handling in amdgpu_device_pre_asic_reset() when the first KIQ submission is made after a MODE1 reset. A local user can trigger the first KIQ submission after a reset to cause a denial of service.
The KIQ ring uses polling fences and has no scheduler.
Remediation
Install update from vendor's website.