Re: [Qemu-devel] [PATCH] qemu-nbd: Ignore SIGPIPE

[P J P <ppandit@redhat.com>]

+-- On Tue, 27 Jun 2017, Eric Blake wrote --+
| > $ qemu-nbd -x foo -f raw -t null-co:// &
| > [1] 12726
| > $ qemu-io -c quit nbd://localhost/bar
| > can't open device nbd://localhost/bar: No export with name 'bar' available
| > [1]  + 12726 broken pipe  qemu-nbd -x foo -f raw -t null-co://
| > 
| > In this case, the client sends an NBD_OPT_ABORT and closes the
| > connection (because it is not required to wait for a reply), but the
| > server replies with an NBD_REP_ACK (because it is required to reply).
| > 
| > Signed-off-by: Max Reitz <mreitz@redhat.com>
| > ---
| 
| As mentioned in another thread, I'm trying to figure out if this patch
| belongs as a third patch to fix CVE-2017-9524, or whether we want to
| open a second CVE by considering this a slightly different
| denial-of-service attack than what my patches fixed.

  Yes, this would be a separate issue, as it breaks 'qemu-nbd' server 
irrespective of whether 'CVE-2017-9524' fix is applied or not.

I'll get a CVE assigned and process it further.

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
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