Date: Wed, 21 Dec 2011 23:10:42 +0100 From: Petr Matousek <pmatouse@...hat.com> To: oss-security@...ts.openwall.com Subject: CVE Request -- kernel: tight loop and no preemption can cause system stall A tight loop in user level process isn't preempted unless a realtime process is woken up on the cpu. Some important kernel threads such as events/*, kblockd/* can be blocked by the process, and the machine stalls. Unprivileged local user could use this flaw to DoS the system. Upstream commit: f26f9aff6aaf67e9a430d16c266f91b13a5bff64 Reference: https://lkml.org/lkml/2010/11/20/212 https://bugzilla.redhat.com/show_bug.cgi?id=769711 Thanks, -- Petr Matousek / Red Hat Security Response Team
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