Security Advisory
CVE-2025-21745
CVE vulnerability detail — eXtreme Datacenter Security Operations
Description
In the Linux kernel, the following vulnerability has been resolved: blk-cgroup: Fix class @block_classs subsystem refcount leakage blkcg_fill_root_iostats() iterates over @block_classs devices by class_dev_iter_(init|next)(), but does not end iterating with class_dev_iter_exit(), so causes the classs subsystem refcount leakage. Fix by ending the iterating with class_dev_iter_exit().