oss-security - CVE request Qemu: scsi: mptsas: OOB access when freeing MPTSASRequest object

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Date: Fri, 16 Sep 2016 17:10:41 +0530 (IST)
From: P J P <ppandit@...hat.com>
To: oss security list <oss-security@...ts.openwall.com>
cc: Li Qiang <liqiang6-s@....cn>
Subject: CVE request Qemu: scsi: mptsas: OOB access when freeing MPTSASRequest
 object

   Hello,

Quick emulator(Qemu) built with the LSI SAS1068 Host Bus emulation support, is 
vulnerable to an invalid memory access issue. It could occur while processing 
scsi io requests in mptsas_process_scsi_io_request.

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

Upstream patch
--------------
   -> https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03604.html

Reference:
----------
   -> https://bugzilla.redhat.com/show_bug.cgi?id=1376776

This issue was reported by Li Qiang 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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