CVE-2026-72109
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk6th percentile - higher than 6% of all known CVEs
Summary
In the Linux kernel's sparx5 network driver, if workqueue allocation fails, the blocking notifier registration is not undone, leading to resource leak. This can cause system instability or crash.
Risk Assessment
The vulnerability may lead to kernel resource exhaustion, potentially resulting in system crash or denial of service.
Recommendation
Apply the kernel patch that adds an error path to unregister the blocking notifier, and update your system to the latest version.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking notifier before allocating the ordered workqueue. If the workqueue allocation fails, the error path unregisters the switchdev and netdevice notifiers, but leaves the blocking notifier registered. Add a separate error label for the workqueue allocation failure path and unregister the switchdev blocking notifier there.