Re: CVE request: kernel: NLM: Don't hang forever on NLM unlock requests

[Josh Bressers <bressers () redhat com>]

----- 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 () sw ru>
> Signed-off-by: Trond Myklebust <Trond.Myklebust () netapp com>
> Cc: stable () kernel 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