CVE-2024-50250 is a high-severity vulnerability in the Linux kernel's fsdax subsystem where the dax_unshare_iter function improperly copies data blocks. Misalignment in copying can lead to data corruption and exposure of stale persistent memory contents. The flaw arises because the code does not ensure copying entire blocks aligned to fsblock/page boundaries, causing confidentiality and integrity issues. The fix involves aligning copy operations to page boundaries and addressing memory mapping invalidation to prevent stale data access.