SB2025032748 - Improper locking in Linux kernel tee optee driver
Published: March 27, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025032748
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 locking (CVE-ID: CVE-2025-21871)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the optee_supp_thrd_req() function in drivers/tee/optee/supp.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/0180cf0373f84fff61b16f8c062553a13dd7cfca
- https://git.kernel.org/stable/c/21234efe2a8474a6d2d01ea9573319de7858ce44
- https://git.kernel.org/stable/c/3eb4911364c764572e9db4ab900a57689a54e8ce
- https://git.kernel.org/stable/c/70b0d6b0a199c5a3ee6c72f5e61681ed6f759612
- https://git.kernel.org/stable/c/c0a9a948159153be145f9471435695373904ee6d
- https://git.kernel.org/stable/c/d61cc1a435e6894bfb0dd3370c6f765d2d12825d
- https://git.kernel.org/stable/c/ec18520f5edc20a00c34a8c9fdd6507c355e880f
- https://git.kernel.org/stable/c/fd9d2d6124c293e40797a080adf8a9c237efd8b8
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.17