CVE-2026-45199 GPU DDK - rgxfw_to_ptr() does not reject FW private data pointers
A guest VM can trigger out-of-bounds writes in the GPU firmware, leading to privilege escalation or code execution within the host kernel.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45199?
CVE-2026-45199 is a high-severity memory corruption vulnerability in Imagination Technologies Graphics DDK, published on 21 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a write of data outside the Guest's virtualised GPU memory.
Software installed and run under a Guest VM can send commands to the GPU which result in out of bounds memory accesses. These can be used to escalate privileges.
Weakness: CWE-823
Which versions are affected by CVE-2026-45199?
How do I fix CVE-2026-45199?
No fix has been published for CVE-2026-45199 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-45199 being exploited?
There is no known exploitation of CVE-2026-45199 in the wild and no public exploit code.
Sources
Also known as GHSA-4p5h-7mq4-j3p9.