CVE-2024-0562
kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · March 10, 2023
Updated · August 7, 2026
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.
Statement
This CVE pertains to older versions of Red Hat Linux Kernel (before 8.6) where the patch is not applied yet.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
CVSS / CWE
CVSS 3.1 · 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 · Use After Free