Use-After-Free in GPU Driver Leading to Arbitrary Memory Access

Executive Summary

This vulnerability involves improper GPU system calls that allow non-privileged users to free memory still in use. The attacker can replace the freed memory with another allocation, leading to arbitrary memory reads or writes to physical memory pages. This occurs because a memory buffer managed by a CPU thread can be freed while a GPU thread is still accessing it, causing the GPU to access unintended memory regions.

Useful 0 Not Useful 0

Detection Guidance

This vulnerability involves improper GPU memory handling by non-privileged software. Detection requires monitoring GPU driver logs for memory access violations or unexpected buffer replacements. Check for crashes or errors in graphics-related processes using system logs or tools like dmesg on Linux. No specific commands are provided in the context.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability could allow an attacker with local access to execute arbitrary code, escalate privileges, or crash the system. It may lead to unauthorized data access, system instability, or complete system compromise depending on the affected software and hardware configuration.

Useful 0 Not Useful 0

Compliance Impact

This vulnerability could lead to arbitrary memory reads or writes, potentially exposing sensitive data. For GDPR, this may violate principles of data protection and confidentiality. For HIPAA, it could compromise protected health information integrity and security.

Useful 0 Not Useful 0

Mitigation Strategies

Immediate mitigation involves updating the GPU driver to the latest version from the vendor. Restrict non-privileged user access to GPU system calls if possible. Monitor for unusual memory access patterns in GPU-related processes. No specific steps are detailed in the provided context.

Useful 0 Not Useful 0