CVE-2026-45200: GPU DDK - Double free in _FreeOSPages due to incorrect allocation flag set by _EncodeAllocationFlags
Software installed and run as a non-privileged user may conduct improper GPU driver IOCTL calls to create an allocation scenario that when freed would cause double free and kernel heap corruption.
Scenario caused by fabricating a specific combination of flags on the allocation interface that would cause an incorrect double free event when freed.
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Restrict GPU driver IOCTL access so that non-privileged users cannot perform improper GPU driver IOCTL calls that could fabricate allocation flags and trigger the double free in _FreeOSPages.
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker needs the ability to run software as a non-privileged user on the affected system. Exploitation involves making improper GPU driver IOCTL calls.
What conditions are needed to trigger the vulnerability?
The attacker must create a specific allocation scenario by fabricating a particular combination of flags on the allocation interface. Freeing that allocation can then trigger a double free and kernel heap corruption.
What is the potential impact of successful exploitation?
Successful exploitation can cause a double free in the GPU driver and kernel heap corruption. The provided information does not state whether this leads to privilege escalation, code execution, or denial of service.