CVE-2024-53210 is a medium severity vulnerability in the Linux kernel's s390/iucv subsystem where using the MSG_PEEK flag causes a memory leak in the iucv_sock_destruct() function. The flaw arises because the skb reference count is incremented when MSG_PEEK is used but not decremented properly, leading to memory not being freed and warnings during socket closure. This issue has been resolved in the Linux kernel.