Date: Thu, 23 Jun 2011 15:51:18 -0400 (EDT) From: Josh Bressers <bressers@...hat.com> To: oss-security@...ts.openwall.com Cc: "Steven M. Christey" <coley@...us.mitre.org> Subject: Re: CVE request: kernel: NLM: Don't hang forever on NLM unlock requests ----- Original Message ----- > NLM: Don't hang forever on NLM unlock requests > > If the NLM daemon is killed on the NFS server, we can currently end up > hanging forever on an 'unlock' request, instead of aborting. Basically, > if the rpcbind request fails, or the server keeps returning garbage, we > really want to quit instead of retrying. > > Tested-by: Vasily Averin <vvs@...ru> > Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com> > Cc: stable@...nel.org > > In English, it means that a local, unprivileged user could use the flock > system call on a NFS share to cause a denial of service. > > https://bugzilla.redhat.com/show_bug.cgi?id=709393 > http://git.kernel.org/linus/0b760113a3a155269a3fba93a409c640031dd68f > Please use CVE-2011-2491. Thanks. -- JB
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