{"schema_version":"1.7.5","id":"CVE-2025-39807","published":"2025-09-16T13:00:10.408Z","modified":"2026-07-15T01:49:19.980418589Z","related":["SUSE-SU-2025:03601-1","SUSE-SU-2025:03633-1","SUSE-SU-2025:21074-1","SUSE-SU-2025:21139-1","SUSE-SU-2025:21179-1","SUSE-SU-2025:3725-1","SUSE-SU-2026:20560-1","openSUSE-SU-2025:20081-1"],"summary":"drm/mediatek: Add error handling for old state CRTC in atomic_disable","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/mediatek: Add error handling for old state CRTC in atomic_disable\n\nIntroduce error handling to address an issue where, after a hotplug\nevent, the cursor continues to update. This situation can lead to a\nkernel panic due to accessing the NULL `old_state->crtc`.\n\nE,g.\nUnable to handle kernel NULL pointer dereference at virtual address\nCall trace:\n mtk_crtc_plane_disable+0x24/0x140\n mtk_plane_atomic_update+0x8c/0xa8\n drm_atomic_helper_commit_planes+0x114/0x2c8\n drm_atomic_helper_commit_tail_rpm+0x4c/0x158\n commit_tail+0xa0/0x168\n drm_atomic_helper_commit+0x110/0x120\n drm_atomic_commit+0x8c/0xe0\n drm_atomic_helper_update_plane+0xd4/0x128\n __setplane_atomic+0xcc/0x110\n drm_mode_cursor_common+0x250/0x440\n drm_mode_cursor_ioctl+0x44/0x70\n drm_ioctl+0x264/0x5d8\n __arm64_sys_ioctl+0xd8/0x510\n invoke_syscall+0x6c/0xe0\n do_el0_svc+0x68/0xe8\n el0_svc+0x34/0x60\n el0t_64_sync_handler+0x1c/0xf8\n el0t_64_sync+0x180/0x188\n\nAdding NULL pointer checks to ensure stability by preventing operations\non an invalid CRTC 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