Vulnerability identifier: #VU93694

Vulnerability risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-47073

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: 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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/75cfc833da4a2111106d4c134e93e0c7f41e35e7
http://git.kernel.org/stable/c/6fa78a6b9a3beb676a010dc489c1257f7e432525
http://git.kernel.org/stable/c/0cf036a0d325200e6c27b90908e51195bbc557b1
http://git.kernel.org/stable/c/8d746ea7c687bab060a2c05a35c449302406cd52
http://git.kernel.org/stable/c/3a53587423d25c87af4b4126a806a0575104b45e

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.