#VU93210 Resource management error in Linux kernel - CVE-2021-47023
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93210
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-47023
CWE-ID: CWE-399
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 perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the prestera_port_handle_event() function in drivers/net/ethernet/marvell/prestera/prestera_main.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
External links
- https://git.kernel.org/stable/c/0ce6052802be2cb61a57b753e41301339c88c839
- https://git.kernel.org/stable/c/b5bba6ede42693f50ce1c9944315cefed7491061
- https://git.kernel.org/stable/c/9d1ba11fabdd8f25abb24272ef1621417981320b
- https://git.kernel.org/stable/c/333980481b99edb24ebd5d1a53af70a15d9146de
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.37
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13