Linux Kernel CVE-2025-68747

In the Linux kernel, the following vulnerability has been resolved:

drm/panthor: Fix UAF on kernel BO VA nodes

If the MMU is down, panthor_vm_unmap_range() might return an error. We expect the page table to be updated still, and if the MMU is blocked, the rest of the GPU should be blocked too, so no risk of accessing physical memory returned to the system (which the current code doesn't cover for anyway).

Proceed with the rest of the cleanup instead of bailing out and leaving the va_node inserted in the drm_mm, which leads to UAF when other adjacent nodes are removed from the drm_mm tree.

The affected component is the Linux kernel's Panthor DRM driver (drivers/gpu/drm/panthor), present in kernels shipping Panthor (introduced around 6.10 and maintained in later stable series). Exact vulnerable version ranges were not enumerated in NVD CPE data provided; the fix is distributed across multiple stable branches as shown by the four kernel.org stable commits (0612704b6f6d, 1123eadb8435, 5a0060ddfc1f, 98dd5143447a). Practically, systems using ARM Mali CSF GPUs with the mainline/stable Panthor driver are affected; downstream vendor and distribution kernels that backported Panthor should verify against these commit hashes.