#VU92339 NULL pointer dereference in Linux kernel - CVE-2021-47612
Published: June 20, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU92339
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-2021-47612
CWE-ID: CWE-476
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 NULL pointer dereference within the nfc_genl_dump_devices_done() function in net/nfc/netlink.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/ea55b3797878752aa076b118afb727dcf79cac34
- https://git.kernel.org/stable/c/214af18abbe39db05beb305b2d11e87d09a6529c
- https://git.kernel.org/stable/c/6644989642844de830f9b072cd65c553cb55946c
- https://git.kernel.org/stable/c/2a8845b9603c545fddd17862282dc4c4ce0971e3
- https://git.kernel.org/stable/c/d731ecc6f2eaec68f4ad1542283bbc7d07bd0112
- https://git.kernel.org/stable/c/c602863ad28ec86794cb4ab4edea5324f555f181
- https://git.kernel.org/stable/c/d89e4211b51752daf063d638af50abed2fd5f96d
- https://git.kernel.org/stable/c/fd79a0cbf0b2e34bcc45b13acf962e2032a82203
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.259
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.222
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.296
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.294
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.87
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.167