Advisory Published
CVE Published

CVE-2024-0562: Kernel: use-after-free after removing device in wb_inode_writeback_end in mm/page-writeback.c

First published: Mon Jan 15 2024(Updated: )

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.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Linux Linux kernel<6.0
Linux Linux kernel=6.0-rc1
Linux Linux kernel=6.0-rc2
Redhat Enterprise Linux=8.0
Redhat Enterprise Linux=9.0

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