SB20251230282 - Buffer overflow in Linux kernel char tpm driver
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230282
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2023-54309)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to memory corruption within the function in drivers/char/tpm/tpm_vtpm_proxy.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/04e8697d26613ccea760cf57eb20a5a27f788c0f
- https://git.kernel.org/stable/c/092db954e2c3c5ba6c0ce990c7da72cf8f3b9c51
- https://git.kernel.org/stable/c/509d21f1c4bb9d35d397fca3226165b156a7639f
- https://git.kernel.org/stable/c/86b9820395f226b8f33cbae9599deebf8af1ce72
- https://git.kernel.org/stable/c/99b998fb9d7d2d2d9dbb3e19db2d0ade02f5a604
- https://git.kernel.org/stable/c/9ff7fcb3a2ed0e9b895bb5b4c13872d584a8815b
- https://git.kernel.org/stable/c/e08295290c53a3cf174c236721747a01b9550ae2
- https://git.kernel.org/stable/c/f4032d615f90970d6c3ac1d9c0bce3351eb4445c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.322
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.291
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.10.188
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.121
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.251
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.40
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.5
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.5