SB20260916135 - Improper initialization in Linux kernel accel ethosu driver
Published: September 16, 2026
Security Bulletin ID
SB20260916135
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-2026-89976)
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 cleanup of an uninitialized fence in the Ethos-U job handling code when handling job submissions that encounter an error before fence initialization. A local user can submit a job that triggers an error before the completion fence is initialized to cause a denial of service.
Remediation
Install update from vendor's website.