CVE-2011-4081

CVE-2011-4081 describes a denial-of-service vulnerability in the Linux kernel's crypto/ghash-generic.c component, affecting versions prior to 3.1. A local attacker can trigger a NULL pointer dereference and system crash (OOPS) by manipulating ghash_setkey, ghash_update, or ghash_final function calls, potentially leading to other unspecified impacts. Rated Medium severity (CVSS 5.5), this vulnerability requires local access and has a low attack complexity, primarily impacting system availability. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion, indicating a low current threat level.