Denial of Service Vulnerability in Linux Kernel's epoll_ctl System Call

CVE-2012-3375 · MEDIUM Severity

AV:L/AC:L/AU:N/C:N/I:N/A:C

The epoll_ctl system call in fs/eventpoll.c in the Linux kernel before 3.2.24 does not properly handle ELOOP errors in EPOLL_CTL_ADD operations, which allows local users to cause a denial of service (file-descriptor consumption and system crash) via a crafted application that attempts to create a circular epoll dependency. NOTE: this vulnerability exists because of an incorrect fix for CVE-2011-1083.

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