#VU116831 Input validation error in Linux kernel - CVE-2023-53626
Published: October 8, 2025 / Updated: October 26, 2025
Vulnerability identifier: #VU116831
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-2023-53626
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 ext4_rename() function in fs/ext4/namei.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's repository.
External links
- https://git.kernel.org/stable/c/020166bc6669ca9fb267ebd96bd88c4fb64a5d46
- https://git.kernel.org/stable/c/1c93c42c7bb23057bde8a0a2ab834927ff64d20c
- https://git.kernel.org/stable/c/43ce288ab5d7274a4a141d7f5e3ed2ab7b41f8a2
- https://git.kernel.org/stable/c/70e42feab2e20618ddd0cbfc4ab4b08628236ecd
- https://git.kernel.org/stable/c/c16cbd8233d6c58fc488545393e49b5d55729990
- https://git.kernel.org/stable/c/e71eb4dca41f0f36823724ced0406bb2dbdd5506
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.21