Vulnerability identifier: #VU91555

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-2021-47139

CWE-ID: CWE-665

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 initialization within the hns3_client_init() function in drivers/net/ethernet/hisilicon/hns3/hns3_enet.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/a663c1e418a3b5b8e8edfad4bc8e7278c312d6fc
http://git.kernel.org/stable/c/0921a0620b5077796fddffb22a8e6bc635a4bb50
http://git.kernel.org/stable/c/a289a7e5c1d49b7d47df9913c1cc81fb48fab613

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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.