GPU DDK - TOCTOU affecting psFWMemContext->uiPageCatBaseRegSet
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.5epss 0.1%
exploitation probability
0.1%top 100% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected products
Imagination Technologies · Graphics DDK