CVE-2026-46276 drm/amdgpu: fix zero-size GDS range init on RDNA4

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix zero-size GDS range init on RDNA4 RDNA4 GFX 12 hardware removes the GDS, GWS, and OA on-chip memory resources. The gfxv120 initialisation code correctly leaves adev-gds.gdssize, adev-gds.gwssize, and adev-gds.oasi...

CVE-2026-46276

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix zero-size GDS range init on RDNA4 RDNA4 GFX 12 hardware removes the GDS, GWS, and OA on-chip memory resources. The gfxv120 initialisation code correctly leaves adev-gds.gdssize, adev-gds.gwssize, and adev-gds.oasi...

CVE-2026-46276

CVE-2026-46276 concerns the Linux kernel AMDGPU driver on RDNA4 (GFX 12). The issue: amdgpu_ttm_init_on_chip() is called for GDS, GWS and OA resources regardless of whether they exist; when a resource size is zero, drm_mm_init(0,0) triggers DRM_MM_BUG_ON and can crash the kernel during modprobe o...