#VU105036 Input validation error in Linux kernel - CVE-2025-21721
Published: February 27, 2025 / Updated: May 11, 2025
Vulnerability identifier: #VU105036
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-2025-21721
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 nilfs_rename() function in fs/nilfs2/namei.c, within the nilfs_inode_by_name(), nilfs_set_link() and nilfs_delete_entry() functions in fs/nilfs2/dir.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/481136234dfe96c7f92770829bec6111c7c5f5dd
- https://git.kernel.org/stable/c/eddd3176b8c4c83a46ab974574cda7c3dfe09388
- https://git.kernel.org/stable/c/ee70999a988b8abc3490609142f50ebaa8344432
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.235
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.179
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.291
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.131
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.13
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.14
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.80