#VU91550 Improper Initialization in Linux kernel - CVE-2021-47284
Published: June 8, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91550
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-2021-47284
CWE-ID: CWE-665
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 initialization within the nj_probe() function in drivers/isdn/hardware/mISDN/netjet.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/958cb1078ca60d214826fd90a0961a447fade59a
- https://git.kernel.org/stable/c/4c1fcb6ec964b44edbf84235134582a5ffae1521
- https://git.kernel.org/stable/c/a0a37e4454ca1c0b424edc2c9c2487c2c46a1be6
- https://git.kernel.org/stable/c/bf78e25bd3f487208e042c67c8a31706c2dba265
- https://git.kernel.org/stable/c/9d7d4649dc1c53acf76df260fd519db698ed20d7
- https://git.kernel.org/stable/c/143fc7220961220eecc04669e5909af8847bf8c8
- https://git.kernel.org/stable/c/6249193e03709ea625e10706ecaf17fea0427d3d
- https://git.kernel.org/stable/c/9f6f852550d0e1b7735651228116ae9d300f69b3
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.237
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.195
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.273
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.273
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.44
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.126