oss-security - CVE request: Qemu: scsi: pvscsi: OOB read and infinite loop while setting descriptor rings

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Date: Tue, 6 Sep 2016 16:32:34 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Li Qiang <liqiang6-s@....cn>, Tom Victor <vv474172261@...il.com>
Subject: CVE request: Qemu: scsi: pvscsi: OOB read and infinite loop while
 setting descriptor rings

   Hello,

Quick Emulator(Qemu) built with the VMWARE PVSCSI paravirtual SCSI bus 
emulation support is vulnerable to an OOB access and/or infinite loop issue. 
It could occur while processing SCSI commands 'PVSCSI_CMD_SETUP_RINGS'.

A privileged user inside guest could use this flaw to crash the Qemu process 
resulting in DoS.

Upstream patch:
---------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg00050.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1373462

These issues were reported by Vivtor V and Li Quiang of 360.cn Inc.

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

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