CVE-2024-0562 Information

Description

A use-after-free flaw was found in the Linux Kernel. When a disk is removed bdi_unregister is called to stop further write-back and waits for associated delayed work to complete. However wb_inode_writeback_end() may schedule bandwidth estimation work after this has completed which can result in the timer attempting to access the recently freed bdi_writeback.

Reference

https://access.redhat.com/security/cve/CVE-2024-0562 https://bugzilla.redhat.com/show_bug.cgi?id=2258475 https://patchwork.kernel.org/project/linux-mm/patch/20220801155034.3772543-1-khazhy@google.com/