Use-after-free in Linux kernel - CVE-2022-0646
Published: November 21, 2023
Vulnerability identifier: #VU83382
CSH Severity: 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-2022-0646
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 in the Linux kernel Management Component Transport Protocol (MCTP) subsystem. A local user can trigger a use-after-free error by calling the ancel_work_sync() function after the unregister_netdev during removing device and execute arbitrary code with elevated privileges.
Remediation
Install updates from vendor's website.