CVE-2010-4247

CVE-2010-4247 describes a denial-of-service vulnerability affecting Xen versions prior to 3.4.0, specifically within the blkback and blktap drivers in the Linux kernel 2.6.18 and potentially other versions. Authenticated guest OS users can trigger an infinite loop and high CPU consumption by providing a large production request index. The vulnerability has a CVSS score of 5.5, indicating a medium severity, with an adjacent network attack vector and low attack complexity, leading to a complete denial of service. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.