{"id":"CVE-2026-43294","state":"PUBLISHED","title":"drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels","description":"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 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","publishedAt":"2026-05-08T13:11:17.483Z","updatedAt":"2026-10-21T12:40:29.748Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"3cd7a71958c9f7f1def1a110e1ac98c022a554cd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"ad9a3246e76b83cd19eb07088111a743a9558bcd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"79f42487ed60d0d5ffce97c3bb98f80c3d17735a","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"41cda667ffc5074c56279c632b0c20024da6ecdd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"64aa8b3a60a825134f7d866adf05c024bbe0c24c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"]}],"references":["https://git.kernel.org/stable/c/3cd7a71958c9f7f1def1a110e1ac98c022a554cd","https://git.kernel.org/stable/c/ad9a3246e76b83cd19eb07088111a743a9558bcd","https://git.kernel.org/stable/c/79f42487ed60d0d5ffce97c3bb98f80c3d17735a","https://git.kernel.org/stable/c/41cda667ffc5074c56279c632b0c20024da6ecdd","https://git.kernel.org/stable/c/64aa8b3a60a825134f7d866adf05c024bbe0c24c"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43294.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43294","state":"PUBLISHED","datePublished":"2026-05-08T13:11:17.483Z","dateUpdated":"2026-10-21T12:40:29.748Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:55.999Z"},"containers":{"cna":{"title":"drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels","descriptions":[{"lang":"en","value":"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 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"}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"3cd7a71958c9f7f1def1a110e1ac98c022a554cd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"ad9a3246e76b83cd19eb07088111a743a9558bcd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"79f42487ed60d0d5ffce97c3bb98f80c3d17735a","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"41cda667ffc5074c56279c632b0c20024da6ecdd","versionType":"git"},{"version":"7a043f978ed1433bddb088a732e9bb91501ebd76","status":"affected","lessThan":"64aa8b3a60a825134f7d866adf05c024bbe0c24c","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.2","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.2","versionType":"semver"},{"version":"6.6.160","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.16","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.6","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c"]}],"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"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:40:29.748Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.18.16"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"6.19.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.2","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}