CVE-2026-98217

In the Linux kernel, the following vulnerability has been resolved:

IB/mlx4: Fix use-after-free on pkey sysfs registration failure

register_pkey_tree() ignores errors from register_one_pkey_tree() and

continues registering the remaining slaves. The per-slave error path has

already released the pkey parent kobjects, but their pointers remain

stored in the device. A later device cleanup therefore passes the stale

pointers to kobject_put(), causing a use-after-free.

Clear the parent pointers after releasing a failed slave tree and skip

unregistered trees during device cleanup. This preserves the existing

best-effort registration behavior while preventing a second cleanup of

the failed tree.