Infinite loop in Linux kernel - CVE-2026-89744
Published: September 12, 2026
Vulnerability identifier: #VU149055
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-89744
CWE-ID: CWE-835
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 an infinite loop in fwnode_get_next_child_node() when iterating over children of a fwnode with a secondary fwnode that has more than one child. A local user can trigger the child-node iteration to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89744
Install security update from vendor's repository.