CVE-2017-7472

CVE-2017-7472 describes a denial-of-service vulnerability in the Linux kernel's KEYS subsystem, affecting versions prior to 4.10.13. A local attacker can exploit this by repeatedly calling keyctl_set_reqkey_keyring, leading to excessive memory consumption. This vulnerability has a CVSS score of 5.5 (Medium), indicating a low attack complexity and requiring local access, with the primary impact being high availability loss. While not listed on the KEV catalog or showing active exploitation, a public exploit (EDB-42136) exists, though there is minimal community discussion or media coverage.