drm: zynqmp_dpsub: Always register bridge

CVE-2024-38664

What is CVE-2024-38664?

A vulnerability in the Linux kernel related to the Direct Rendering Manager (DRM) functionality has been fixed, addressing a critical aspect of the Zynq UltraScale+ MPSoC. The issue arose from the failure to register the DRM bridge properly, which caused the zynqmp_dp_hpd_work_func to invoke drm_bridge_hpd_notify. This function relied on the initialization of hpd_mutex, which was not always ensured prior to the invocation. The resolution of this vulnerability prevents potential inconsistencies and guarantees proper initialization, thereby eliminating resulting lockdep warnings and improving the stability of the driver.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch →

References