#VU120743 Out-of-bounds read in Linux kernel - CVE-2023-54203
Published: December 30, 2025 / Updated: December 31, 2025
Vulnerability identifier: #VU120743
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-2023-54203
CWE-ID: CWE-125
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 an out-of-bounds read error within the fs/ksmbd/smb_common.h. 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/921536046bd165efeb07beef5630aff35cd6a489
- https://git.kernel.org/stable/c/99a51c673b1d2d0b5a972353401b77612d9cc713
- https://git.kernel.org/stable/c/a8334a0c535d0f0b4d64926c8fe0922ed98f7d43
- https://git.kernel.org/stable/c/dc8289f912387c3bcfbc5d2db29c8947fa207c11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.145
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.24
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.11
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3