Memory leak in Linux kernel - CVE-2021-47403
Published: June 10, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU91623
CSH Severity: 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-2021-47403
CWE-ID: CWE-401
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 memory leak within the ipoctal_port_activate() and ipoctal_cleanup() functions in drivers/ipack/devices/ipoctal.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/31398849b84ebae0d43a1cf379cb9895597f221a
- https://git.kernel.org/stable/c/c0adb5a947dec6cff7050ec56d78ecd3916f9ce6
- https://git.kernel.org/stable/c/dde4c1429b97383689f755ce92b4ed1e84a9c92b
- https://git.kernel.org/stable/c/9c5b77a7ffc983b2429ce158b50497c5d3c86a69
- https://git.kernel.org/stable/c/3253c87e1e5bc0107aab773af2f135ebccf38666
- https://git.kernel.org/stable/c/7cea848678470daadbfdaa6a112b823c290f900c
- https://git.kernel.org/stable/c/811178f296b16af30264def74c8d2179a72d5562
- https://git.kernel.org/stable/c/bb8a4fcb2136508224c596a7e665bdba1d7c3c27
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.249
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.209
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.286
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.285
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.71
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.10
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.151