{"id":"CVE-2026-43294","title":"drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels\n\nSince commit 56de5e305d4b (\"clk: renesas: r9a07g044: Add MSTOP for RZ/G2L\")\nwe may get t…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 3cd7a71958c9f7f1def1a110e1ac98c022a554cd","Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < ad9a3246e76b83cd19eb07088111a743a9558bcd","Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 79f42487ed60d0d5ffce97c3bb98f80c3d17735a","Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 41cda667ffc5074c56279c632b0c20024da6ecdd","Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 64aa8b3a60a825134f7d866adf05c024bbe0c24c","Linux 6.2"],"published":"2026-05-08","updated":"2026-10-21","sourceUpdated":"2026-10-21T12:40:29.748Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43294","references":[{"url":"https://git.kernel.org/stable/c/3cd7a71958c9f7f1def1a110e1ac98c022a554cd"},{"url":"https://git.kernel.org/stable/c/ad9a3246e76b83cd19eb07088111a743a9558bcd"},{"url":"https://git.kernel.org/stable/c/79f42487ed60d0d5ffce97c3bb98f80c3d17735a"},{"url":"https://git.kernel.org/stable/c/41cda667ffc5074c56279c632b0c20024da6ecdd"},{"url":"https://git.kernel.org/stable/c/64aa8b3a60a825134f7d866adf05c024bbe0c24c"}],"tags":["cve.org"],"epss":0.0016,"epssPercentile":0.04784,"ingestedAt":"2026-10-21T12:48:53.641Z","slug":"CVE-2026-43294","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndrm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels\n\nSince commit 56de5e305d4b (\"clk: renesas: r9a07g044: Add MSTOP for RZ/G2L\")\nwe may get the following kernel panic, for some panels, when rebooting:\n\n  systemd-shutdown[1]: Rebooting.\n  Call trace:\n   ...\n   do_serror+0x28/0x68\n   el1h_64_error_handler+0x34/0x50\n   el1h_64_error+0x6c/0x70\n   rzg2l_mipi_dsi_host_transfer+0x114/0x458 (P)\n   mipi_dsi_device_transfer+0x44/0x58\n   mipi_dsi_dcs_set_display_off_multi+0x9c/0xc4\n   ili9881c_unprepare+0x38/0x88\n   drm_panel_unprepare+0xbc/0x108\n\nThis happens for panels that need to send MIPI-DSI commands in their\nunprepare() callback. Since the MIPI-DSI interface is stopped at that\npoint, rzg2l_mipi_dsi_host_transfer() triggers the kernel panic.\n\nFix by moving rzg2l_mipi_dsi_stop() to new callback function\nrzg2l_mipi_dsi_atomic_post_disable().\n\nWith this change we now have the correct power-down/stop sequence:\n\n  systemd-shutdown[1]: Rebooting.\n  rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_disable(): entry\n  ili9881c-dsi 10850000.dsi.0: ili9881c_unprepare(): entry\n  rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_post_disable(): entry\n  reboot: Restarting system\n\n## Affected\n\n- `Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 3cd7a71958c9f7f1def1a110e1ac98c022a554cd`\n- `Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < ad9a3246e76b83cd19eb07088111a743a9558bcd`\n- `Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 79f42487ed60d0d5ffce97c3bb98f80c3d17735a`\n- `Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 41cda667ffc5074c56279c632b0c20024da6ecdd`\n- `Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 64aa8b3a60a825134f7d866adf05c024bbe0c24c`\n- `Linux 6.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}