Memory leak in Linux kernel - CVE-2021-47075
Published: May 30, 2024 / Updated: May 14, 2025
Vulnerability identifier: #VU90026
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-2021-47075
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 nvmet_alloc_ctrl() function in drivers/nvme/target/core.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/4720f29acb3fe67aa8aa71e6b675b079d193aaeb
- https://git.kernel.org/stable/c/afb680ed7ecbb7fd66ddb43650e9b533fd8b4b9a
- https://git.kernel.org/stable/c/fec356a61aa3d3a66416b4321f1279e09e0f256f
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13