Low (2.5). EPSS 0.09% chance of exploitation in the next 30 days.
Kernel software installed and running inside a Guest VM may post improper commands to the GPU Firmware to trigger a read and/or write data outside the Guest's virtualised GPU memory.
The firmware uses data provided by the Guest VM to set up accesses to memory. It validated this before use, but a TOCTOU bug was present which allowed the earlier check results to be invalidated.
Severity
CVSS 3.1
2.5 low
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
EPSS
0.09% chance of exploitation in the next 30 days; higher than 0% of CVEs (scores of 2026-10-31)