SB2026050997 - Improper control of a resource through its lifetime in Linux kernel renesas rz-du driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper control of a resource through its lifetime (CVE-ID: CVE-2026-43294)

CWE-ID: CWE-664 - Improper control of a resource through its lifetime

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper state management in rzg2l_mipi_dsi_host_transfer() when processing MIPI-DSI commands during panel unprepare on reboot. A local user can trigger a reboot on a system using an affected panel to cause a denial of service.

Only panels that send MIPI-DSI commands in their unprepare() callback are affected.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/41cda667ffc5074c56279c632b0c20024da6ecdd
• https://git.kernel.org/stable/c/64aa8b3a60a825134f7d866adf05c024bbe0c24c
• https://git.kernel.org/stable/c/79f42487ed60d0d5ffce97c3bb98f80c3d17735a