#VU93174 Input validation error in Linux kernel - CVE-2021-47265
Published: June 24, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93174
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-2021-47265
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 mlx5_ib_create_flow() function in drivers/infiniband/hw/mlx5/fs.c, within the mlx4_ib_create_flow() function in drivers/infiniband/hw/mlx4/main.c, within the ib_uverbs_ex_create_flow() function in drivers/infiniband/core/uverbs_cmd.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.