CVE-2026-68105

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amdgpu: Fix kernel panic during driver load failure<br /> <br /> Avoid kernel panic if MES init fails during driver load. The KIQ ring is<br /> falsely marked as ready as ASICs that use MES, KIQ is owned by MES.<br /> <br /> BUG: kernel NULL pointer dereference, address: 0000000000000000<br /> RIP: 0010:gfx_v12_1_wait_reg_mem+0x5a/0x1f0 [amdgpu]<br /> Call Trace:<br /> gfx_v12_1_ring_emit_reg_write_reg_wait+0x1f/0x30 [amdgpu]<br /> amdgpu_gmc_fw_reg_write_reg_wait+0xb2/0x190 [amdgpu]<br /> amdgpu_gmc_flush_gpu_tlb+0x1cc/0x230 [amdgpu]<br /> amdgpu_gart_invalidate_tlb+0x81/0xa0 [amdgpu]<br /> amdgpu_gart_unbind+0x72/0x90 [amdgpu]<br /> amdgpu_ttm_backend_unbind+0xa4/0xb0 [amdgpu]<br /> amdgpu_ttm_tt_unpopulate+0x13/0xd0 [amdgpu]<br /> amdttm_tt_unpopulate+0x29/0x70 [amdttm]<br /> ttm_bo_put+0x1eb/0x360 [amdttm]<br /> amdgpu_bo_free_kernel+0xf9/0x1f0 [amdgpu]<br /> amdgpu_ih_ring_fini+0x5a/0x90 [amdgpu]<br /> amdgpu_irq_fini_hw+0x58/0x80 [amdgpu]<br /> amdgpu_device_fini_hw+0x4e0/0x5b0 [amdgpu]<br /> amdgpu_driver_load_kms+0x60/0xa0 [amdgpu]<br /> amdgpu_pci_probe+0x28e/0x6d0 [amdgpu]<br /> pci_device_probe+0x19f/0x220<br /> really_probe+0x1ed/0x340<br /> driver_probe_device+0x1e/0x80<br /> __driver_attach+0xd3/0x1a0<br /> bus_for_each_dev+0x68/0xa0<br /> bus_add_driver+0x19f/0x270<br /> driver_register+0x5d/0xf0<br /> do_one_initcall+0xac/0x200<br /> do_init_module+0x1ec/0x280<br /> __se_sys_finit_module+0x2de/0x310<br /> do_syscall_64+0x6a/0x250<br /> entry_SYSCALL_64_after_hwframe+0x4b/0x53<br /> <br /> (cherry picked from commit 4623b958dd6da0f4c3026afdf330626a09ecb0f0)