CVE-2026-43294None▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels Since commit 56de5e305d4b ("clk: renesas: r9a07g044: Add MSTOP for RZ/G2L") we may get t…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.2%
In the Linux kernel, the following vulnerability has been resolved:
drm: renesas: rz-du: mipi_dsi: fix kernel panic when rebooting for some panels
Since commit 56de5e305d4b ("clk: renesas: r9a07g044: Add MSTOP for RZ/G2L") we may get the following kernel panic, for some panels, when rebooting:
systemd-shutdown[1]: Rebooting. Call trace: ... do_serror+0x28/0x68 el1h_64_error_handler+0x34/0x50 el1h_64_error+0x6c/0x70 rzg2l_mipi_dsi_host_transfer+0x114/0x458 (P) mipi_dsi_device_transfer+0x44/0x58 mipi_dsi_dcs_set_display_off_multi+0x9c/0xc4 ili9881c_unprepare+0x38/0x88 drm_panel_unprepare+0xbc/0x108
This happens for panels that need to send MIPI-DSI commands in their unprepare() callback. Since the MIPI-DSI interface is stopped at that point, rzg2l_mipi_dsi_host_transfer() triggers the kernel panic.
Fix by moving rzg2l_mipi_dsi_stop() to new callback function rzg2l_mipi_dsi_atomic_post_disable().
With this change we now have the correct power-down/stop sequence:
systemd-shutdown[1]: Rebooting. rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_disable(): entry ili9881c-dsi 10850000.dsi.0: ili9881c_unprepare(): entry rzg2l-mipi-dsi 10850000.dsi: rzg2l_mipi_dsi_atomic_post_disable(): entry reboot: Restarting system
Linux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 3cd7a71958c9f7f1def1a110e1ac98c022a554cdLinux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < ad9a3246e76b83cd19eb07088111a743a9558bcdLinux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 79f42487ed60d0d5ffce97c3bb98f80c3d17735aLinux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 41cda667ffc5074c56279c632b0c20024da6ecddLinux >= 7a043f978ed1433bddb088a732e9bb91501ebd76 < 64aa8b3a60a825134f7d866adf05c024bbe0c24cLinux 6.2Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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