Improper initialization in Linux kernel - CVE-2026-89976
Published: September 16, 2026
Vulnerability identifier: #VU150310
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-89976
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-89976
Install security update from vendor's repository.