Resource management error in Linux kernel - CVE-2021-47007
Published: June 26, 2024 / Updated: May 13, 2025
Vulnerability identifier: #VU93395
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2021-47007
CWE-ID: CWE-399
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to resource management error within the f2fs_resize_fs() function in fs/f2fs/gc.c. A local user can perform a denial of service (DoS) attack.
Affected software
Linux kernel
How to mitigate CVE-2021-47007
Install update from vendor's website.
Linux kernel - addressed in versions 5.10.38, 5.11.22, 5.12.5, 5.13
External References
- https://git.kernel.org/stable/c/1c20a4896409f5ca1c770e1880c33d0a28a8b10f
- https://git.kernel.org/stable/c/860afd680d9cc1dabd61cda3cd246f60aa1eb705
- https://git.kernel.org/stable/c/822054e5026c43b1dd60cf387dd999e95ee2ecc2
- https://git.kernel.org/stable/c/3ab0598e6d860ef49d029943ba80f627c15c15d6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.38
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.22
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13