#VU93309 Input validation error in Linux kernel - CVE-2021-47611
Published: June 25, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93309
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-2021-47611
CWE-ID: CWE-20
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 input validation within the ieee802_11_parse_elems_crc() function in net/mac80211/util.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/03029bb044ccee60adbc93e70713f3ae58abc3a1
- https://git.kernel.org/stable/c/a19cf6844b509d44ecbd536f33d314d91ecdd2b5
- https://git.kernel.org/stable/c/7fd214fc7f2ee3a89f91e717e3cfad55f5a27045
- https://git.kernel.org/stable/c/c62b16f98688ae7bc0ab23a6490481f4ce9b3a49
- https://git.kernel.org/stable/c/768c0b19b50665e337c96858aa2b7928d6dcf756
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.222
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.88
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.168