Re: CVE Request: Qemu: scsi: pvscsi: infinite loop when processing IO requests

[cve-assign () mitre org]

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> Quick Emulator(Qemu) built with the VMWARE PVSCSI paravirtual SCSI bus
> emulation support is vulnerable to an infinite loop issue. It could occur
> while processing SCSI IO requests.
>
> A privileged user inside guest could use this flaw to crash the Qemu process
> resulting in DoS.
>
> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html
> https://bugzilla.redhat.com/show_bug.cgi?id=1376731
> http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9

> > scsi: pvscsi: limit process IO loop to ring size
> >
> > Vmware Paravirtual SCSI emulator while processing IO requests
> > could run into an infinite loop if 'pvscsi_ring_pop_req_descr'
> > always returned positive value. Limit IO loop to the ring size.

Use CVE-2016-7421.

- -- 
CVE Assignment Team
M/S M300, 202 Burlington Road, Bedford, MA 01730 USA
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