SB2025111290 - Use-after-free in Linux kernel tls
Published: November 12, 2025
Security Bulletin ID
SB2025111290
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) Use-after-free (CVE-ID: CVE-2025-40176)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the tls_decrypt_sg() function in net/tls/tls_sw.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/39dec4ea3daf77f684308576baf483b55ca7f160
- https://git.kernel.org/stable/c/4fc109d0ab196bd943b7451276690fb6bb48c2e0
- https://git.kernel.org/stable/c/9f83fd0c179e0f458e824e417f9d5ad53443f685
- https://git.kernel.org/stable/c/b8a6ff84abbcbbc445463de58704686011edc8e1
- https://git.kernel.org/stable/c/c61d4368197d65c4809d9271f3b85325a600586a