CVE-2025-6573 Overview
CVE-2025-6573 is a critical information disclosure vulnerability affecting trusted execution environments (TEE). Kernel software installed and running inside an untrusted/rich execution environment (REE) could leak sensitive information from the trusted execution environment (TEE). This vulnerability represents a significant breach of the security boundary that TEE architectures are specifically designed to enforce.
Critical Impact
Attackers can potentially extract sensitive data from the trusted execution environment, compromising the integrity of secure enclaves and any cryptographic secrets, keys, or sensitive data processed within the TEE.
Affected Products
- Imagination Technologies GPU Drivers
- Systems utilizing affected TEE/REE implementations
Discovery Timeline
- 2025-08-09 - CVE CVE-2025-6573 published to NVD
- 2025-08-11 - Last updated in NVD database
Technical Details for CVE-2025-6573
Vulnerability Analysis
This vulnerability is classified under CWE-280 (Improper Handling of Insufficient Permissions or Privileges), indicating a fundamental flaw in how permission boundaries between the rich execution environment and trusted execution environment are enforced. The vulnerability allows kernel-level software operating in the REE to access data that should be isolated within the TEE.
Trusted Execution Environments are designed to provide a hardware-isolated secure area for processing sensitive data, including cryptographic operations, biometric data handling, and secure payment processing. The security model relies on strict separation between the "normal world" (REE) and "secure world" (TEE). This vulnerability fundamentally breaks that isolation, allowing privileged code in the REE to extract information that should remain protected.
The network-accessible nature of this vulnerability indicates that remote exploitation is possible without requiring local access to the target system, significantly increasing the attack surface and potential impact.
Root Cause
The root cause stems from improper permission handling between the rich execution environment and trusted execution environment. The kernel software fails to properly validate or restrict access to TEE memory regions or communication channels, allowing unauthorized information leakage across the security boundary. This represents a violation of the fundamental security guarantees that TEE implementations are designed to provide.
Attack Vector
The vulnerability can be exploited remotely over a network connection without requiring user interaction or authentication. An attacker with the ability to execute or influence kernel software in the REE could leverage this flaw to extract sensitive information from the TEE. This could include cryptographic keys, authentication tokens, biometric data, or other secrets that applications store in the TEE for protection.
The exploitation process involves the attacker leveraging the improper permission handling in the kernel software to bypass the TEE/REE boundary and access protected memory regions or intercept secure communications. For detailed technical information, refer to the Imagination Technologies Driver Vulnerabilities advisory.
Detection Methods for CVE-2025-6573
Indicators of Compromise
- Anomalous kernel-level access patterns to TEE memory regions or interfaces
- Unexpected data transfers or communications from TEE subsystems
- Suspicious driver or kernel module behavior related to GPU or TEE operations
- Unauthorized attempts to access secure world interfaces from the normal world
Detection Strategies
- Monitor system calls and kernel interactions with TEE interfaces for unauthorized access attempts
- Implement runtime integrity monitoring for kernel modules interacting with TEE subsystems
- Deploy endpoint detection solutions capable of identifying TEE boundary violation attempts
- Review and audit driver installations and kernel module loading events
Monitoring Recommendations
- Enable enhanced logging for TEE-related system events and driver operations
- Implement security information and event management (SIEM) rules to detect anomalous TEE access patterns
- Monitor for unexpected changes to GPU driver configurations or kernel modules
- Establish baseline behavior for TEE interactions and alert on deviations
How to Mitigate CVE-2025-6573
Immediate Actions Required
- Review and update Imagination Technologies GPU drivers to the latest patched versions
- Restrict kernel-level access to only trusted and verified software components
- Implement network segmentation to limit exposure of affected systems
- Audit systems for signs of exploitation or unauthorized TEE access
Patch Information
Imagination Technologies has published information regarding GPU driver vulnerabilities. Organizations should consult the Imagination Technologies Driver Vulnerabilities page for the latest security patches and remediation guidance. Apply all available firmware and driver updates that address TEE boundary enforcement issues.
Workarounds
- Limit network exposure of systems with vulnerable TEE implementations until patches can be applied
- Implement strict access controls for kernel-level software and driver installations
- Consider disabling non-essential TEE-dependent features temporarily if supported by the system
- Deploy additional monitoring and intrusion detection at network boundaries to identify potential exploitation attempts
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
