CVE-2026-53285

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> drm/amd/display: Wrap DCN32 phantom-plane allocation in DC_RUN_WITH_PREEMPTION_ENABLED<br /> <br /> [Why]<br /> dcn32_validate_bandwidth() wraps dcn32_internal_validate_bw() with<br /> DC_FP_START()/DC_FP_END(). In x86 non-RT, DC_FP_START takes fpregs_lock(),<br /> which disables local softirqs.<br /> <br /> The DML1 path through dcn32_enable_phantom_plane() calls kvzalloc() to<br /> allocate ~335 KiB for dc_plane_state. This triggers the vmalloc path,<br /> which calls BUG_ON(in_interrupt()) because it&amp;#39;s invoked within the<br /> FPU-enabled (softirq disabled) region, leading to a kernel crash.<br /> <br /> [How]<br /> Wrap the dc_state_create_phantom_plane() call with the<br /> DC_RUN_WITH_PREEMPTION_ENABLED() macro to allow preemption during<br /> this memory allocation.<br /> <br /> (cherry picked from commit 885ccbef7b94a8b38f69c4211c679021aa27ad11)