CVE-2024-56627 is a high-severity vulnerability in the Linux kernel's ksmbd component. It involves an out-of-bounds read in the ksmbd_vfs_stream_read function caused by a negative offset value from a client. This issue occurs when the 'vfs objects = streams_xattr' parameter is set in the ksmbd.conf configuration file. The vulnerability can lead to a read beyond the intended buffer boundaries, potentially causing denial of service or information disclosure.