CVE-2022-49411

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A use after free issue was found in the Linux kernel's BFQ IO scheduler. This occurs when a bio is associated with a cgroup that has already been offlined, leading to the insertion of a bfq group into a service tree. Once the last bio associated with this bfq group is completed, the bfq group is freed, causing issues for service tree users. The problem is resolved by ensuring that operations are only performed on online bfq group instances. If the associated bfq group is not online, the first online parent is selected instead.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.