CVE-2024-0562

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.

Score

CVSS 3.1 7.8 High

Status

Modified - secalert@redhat.com

Published

2024-01-15

Last modified

2025-11-15

Weaknesses

CWE-416

Affected products

• Linux Kernel (Linux)
• Enterprise Linux (Redhat)
• Rhel Eus (Redhat)
• Rhev Hypervisor (Redhat)

References

• https://access.redhat.com/errata/RHSA-2024:0412
• 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/