SB20251226280 - Improper error handling in Linux kernel char tpm driver
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226280
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) Improper error handling (CVE-ID: CVE-2023-54073)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the EXPORT_SYMBOL_GPL() function in drivers/char/tpm/tpm-chip.c. 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/0af0a989e747248e05640980661225e5b94cdb9e
- https://git.kernel.org/stable/c/1408d27f25c7b73ece7545cb6434965eedc49ddb
- https://git.kernel.org/stable/c/8da5ba044ea74105f3cfa182603b2f2d766fb22d
- https://git.kernel.org/stable/c/bd8621ca1510e6e802df9855bdc35a04a3cfa932
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.28
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.2.15
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4