#VU93392 Resource management error in Linux kernel - CVE-2021-47414
Published: June 26, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93392
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-2021-47414
CWE-ID: CWE-399
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 resource management error within the ipi_remote_fence_i() function in arch/riscv/mm/cacheflush.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/427faa29e06f0709476ea1bd59758f997ec8b64e
- https://git.kernel.org/stable/c/f1c7aa87c423e765e3862349c2f095fdfccdd9b3
- https://git.kernel.org/stable/c/bb8958d5dc79acbd071397abb57b8756375fe1ce
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.73
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.12
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15