GPU DDK - OOB write due to freelist size integer overflow in RGXCreateHWRTDataSet

Summary

Software installed and run as a non-privileged user may conduct improper system calls to allocate physical memory. A 32-bit integer overflow in the KM driver during page-to-byte conversion of an allocation size can result in an undersized kernel buffer allocation. This may allow unallocated or previously allocated physical pages to be mapped into an attacker-controlled GPU MMU context, leading to disclosure of sensitive kernel data.

Remediation

1. Inventory every Imagination Technologies Graphics DDK deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://www.imaginationtech.com/gpu-driver-vulnerabilities/