CVE-2026-43294

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels<br /> <br /> Since commit 56de5e305d4b ("clk: renesas: r9a07g044: Add MSTOP for RZ/G2L")<br /> we may get the following kernel panic, for some panels, when rebooting:<br /> <br /> systemd-shutdown[1]: Rebooting.<br /> Call trace:<br /> ...<br /> do_serror+0x28/0x68<br /> el1h_64_error_handler+0x34/0x50<br /> el1h_64_error+0x6c/0x70<br /> rzg2l_mipi_dsi_host_transfer+0x114/0x458 (P)<br /> mipi_dsi_device_transfer+0x44/0x58<br /> mipi_dsi_dcs_set_display_off_multi+0x9c/0xc4<br /> ili9881c_unprepare+0x38/0x88<br /> drm_panel_unprepare+0xbc/0x108<br /> <br /> This happens for panels that need to send MIPI-DSI commands in their<br /> unprepare() callback. Since the MIPI-DSI interface is stopped at that<br /> point, rzg2l_mipi_dsi_host_transfer() triggers the kernel panic.<br /> <br /> Fix by moving rzg2l_mipi_dsi_stop() to new callback function<br /> rzg2l_mipi_dsi_atomic_post_disable().<br /> <br /> With this change we now have the correct power-down/stop sequence:<br /> <br /> systemd-shutdown[1]: Rebooting.<br /> rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_disable(): entry<br /> ili9881c-dsi 10850000.dsi.0: ili9881c_unprepare(): entry<br /> rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_post_disable(): entry<br /> reboot: Restarting system