Date: Wed, 21 Dec 2011 15:20:12 -0700 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: CVE Request -- kernel: tight loop and no preemption can cause system stall On 12/21/2011 03:10 PM, Petr Matousek wrote: > 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, Please use CVE-2011-4621 for this issue. -- -Kurt Seifried / Red Hat Security Response Team
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