#VU107799 Input validation error in Linux kernel - CVE-2021-47669
Published: April 22, 2025 / Updated: May 10, 2025
Vulnerability identifier: #VU107799
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-2021-47669
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 vxcan_xmit() function in drivers/net/can/vxcan.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/6d6dcf2399cdd26f7f5426ca8dd8366b7f2ca105
- https://git.kernel.org/stable/c/75854cad5d80976f6ea0f0431f8cedd3bcc475cb
- https://git.kernel.org/stable/c/9b820875a32a3443d67bfd368e93038354e98052
- https://git.kernel.org/stable/c/a24476b37167816e6352ca1a2cf3769847774f70
- https://git.kernel.org/stable/c/e771a874076115df8bff27d325edfd2340e4ec69
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.11