#VU91601 Use-after-free in Linux kernel - CVE-2024-0562
Published: June 10, 2024
Vulnerability identifier: #VU91601
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2024-0562
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Linux kernel
Linux kernel
Software vendor:
Linux Foundation
Linux Foundation
Description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within 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. A local user can execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.