#VU93694 Input validation error in Linux kernel - CVE-2021-47073
Published: July 2, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93694
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-2021-47073
CWE-ID: CWE-20
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 improper input validation within the init_dell_smbios_wmi() function in drivers/platform/x86/dell-smbios-wmi.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/75cfc833da4a2111106d4c134e93e0c7f41e35e7
- https://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525
- https://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1
- https://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52
- https://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.192
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.122