SB20251230188 - Out-of-bounds read in Linux kernel ksmbd
Published: December 30, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251230188
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2023-54203)
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 website.
References
- 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