CVE-2026-68314
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk3th percentile - higher than 3% of all known CVEs
Summary
In the Linux kernel, a resource leak was detected in the mctp i3c module during failed driver registration. If I3C driver registration fails, the notifier and mctp_i3c_bus objects are not cleaned up, leading to memory leaks and leaving a notifier pointing into a module that failed to load. The fix adds cleanup in the error path.
Risk Assessment
Memory leaks and an invalid notifier can lead to system instability or module failure, potentially affecting network operation.
Recommendation
Apply a Linux kernel update containing the fix that adds cleanup of the notifier and bus list on driver registration failure.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: net: mctp i3c: clean up notifier and buses if driver register fails mctp_i3c_mod_init() registers the I3C bus notifier and then walks the existing buses with i3c_for_each_bus_locked(mctp_i3c_bus_add_new, NULL) before registering the I3C device driver. If i3c_driver_register() fails, the function returns the error directly, leaving the notifier registered and every mctp_i3c_bus object created for the existing buses allocated. The notifier is left pointing into the module that failed to load and the bus list is leaked. Mirror the module exit path on this failure: unregister the notifier and tear down the buses that were added before returning the error. This issue was identified during our ongoing static-analysis research while reviewing kernel code.