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Date: Tue, 1 Mar 2011 20:56:46 -0500
From: Nelson Elhage <>
Subject: CVE request: kernel: Multiple DoS issues in epoll

Two requests for bugs in epoll:

(1) The epoll subsystem in Linux did not prevent users from creating circular
epoll file structures, potentially leading to a denial of service (kernel

Upstream commit:

(2) The epoll subsystem allows users to create large nested epoll structures,
which the kernel will then to walk with preemption disabled, causing a denial of
service via excessive CPU consumption in the kernel.


No upstream fix yet for this one.

- Nelson

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