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List:       oss-security
Subject:    [oss-security] CVE-2017-8112 Qemu: scsi: vmw_pvscsi: infinite loop in pvscsi_log2
From:       P J P <ppandit () redhat ! com>
Date:       2017-04-26 7:34:02
Message-ID: alpine.LFD.2.20.1704261248200.8206 () wniryva
[Download RAW message or body]

   Hello,

Quick Emulator(Qemu) built with the VMWARE PVSCSI paravirtual SCSI bus 
emulation support is vulnerable to an infinite loop issue. It could occur 
while initialising SCSI message ring buffer in pvscsi_ring_init_msg().

A privileged user inside guest could use this flaw to consume host cpu cycles 
or crash the Qemu process resulting in DoS.

Upstream patch:
---------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg04578.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1445621

This issue was independently reported by Li Qiang of Qihoo 360 Gear 
Team and YY Z(CC'd).

'CVE-2017-8112' assigned via -> http://cveform.mitre.org/

Thank you.
--
Prasad J Pandit / Red Hat Product Security Team
47AF CE69 3A90 54AA 9045 1053 DD13 3D32 FE5B 041F
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