Date: Thu, 5 Jan 2012 16:53:36 +0100 From: Petr Matousek <pmatouse@...hat.com> To: Greg KH <greg@...ah.com> Cc: oss-security@...ts.openwall.com Subject: Re: CVE Request -- kernel: futex: clear robust_list on execve On Wed, Jan 04, 2012 at 02:23:03PM -0800, Greg KH wrote: > On Wed, Jan 04, 2012 at 11:10:59PM +0100, Petr Matousek wrote: > > Move "exit_robust_list" into mm_release() and clear them > > > > We don't want to get rid of the futexes just at exit() time, we want to > > drop them when doing an execve() too, since that gets rid of the > > previous VM image too. > > > > Doing it at mm_release() time means that we automatically always do it > > when we disassociate a VM map from the task. > > > > Upstream patches: > > 8141c7f3e7aee618312fa1c15109e1219de784a7 > > fc6b177dee33365ccb29fe6d2092223cf8d679f9 > > In the future, could you reference which kernel contained these patches > so I don't have to go look it up? :) I will try to include the kernel version next time. Petr > > For the record, the first one showed up in 2.6.28-rc5 and the second in > 2.6.32-rc4. > > thanks, > > greg k-h -- Petr Matousek / Red Hat Security Response Team
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