In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: NULL-check BO's backing store when determining GFX12 PTE flags PRT BOs may not have any backing store, so bo->tbo.resource will be NULL. Check for that before dereferencing. (cherry picked from commit 3e3fcd29b505cebed659311337ea03b7698767fc)
https://git.kernel.org/stable/c/af23e39b9e9280b1f6299b6f2fa090a1694240ad
https://git.kernel.org/stable/c/72235808eabea93055b459a63443bd9cd6b08aa4
https://git.kernel.org/stable/c/6cc30748e17ea2a64051ceaf83a8372484e597f1