CVE-2026-53285

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description An issue exists in the drm/amd/display component where the dcn32 validate bandwidth() function wraps dcn32 internal validate bw() using DC FP START() and DC FP END(). On x86 non-RT systems, DC FP START acquires fpregs lock(), which disables local softirqs. When the DML1 path via dcn32 enable phantom plane() calls kvzalloc() to allocate memory for dc plane state, it triggers the vmalloc path. Because this occurs within a region where softirqs are disabled, it invokes BUG ON(in interrupt()), resulting in a kernel crash.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.