Improper Initialization in Linux kernel - CVE-2021-47139
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91555
CSH Severity: Low
CVSS v4.0: 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-2021-47139
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability 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.
How to mitigate CVE-2021-47139
Install update from vendor's website.
Sources
- https://git.kernel.org/stable/c/a663c1e418a3b5b8e8edfad4bc8e7278c312d6fc
- https://git.kernel.org/stable/c/0921a0620b5077796fddffb22a8e6bc635a4bb50
- https://git.kernel.org/stable/c/a289a7e5c1d49b7d47df9913c1cc81fb48fab613
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.42
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.9
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13