Vulnerability identifier: #VU92971

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-2021-47201

CWE-ID: CWE-399

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 resource management error within the iavf_disable_vf() function in drivers/net/ethernet/intel/iavf/iavf_main.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/926e8c83d4c1c2dac0026637eb0d492df876489e
http://git.kernel.org/stable/c/78638b47132244e3934dc5dc79f6372d5ce8e98c
http://git.kernel.org/stable/c/9ef6589cac9a8c47f5544ccdf4c498093733bb3f
http://git.kernel.org/stable/c/89f22f129696ab53cfbc608e0a2184d0fea46ac1

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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.