Bug 1376776 (CVE-2016-7423)

Summary: CVE-2016-7423 Qemu: scsi: mptsas: OOB access when freeing MPTSASRequest object
Product: [Other] Security Response Reporter: Prasad Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, drjones, dwmw2, imammedo, itamar, jen, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, sclewis, slong, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Quick Emulator(QEMU) built with LSI SAS1068 Host Bus emulation support, where it is vulnerable to an invalid memory-access issue. The flaw could occur while processing SCSI IO requests in the mptsas_process_scsi_io_request routine. A privileged user inside the guest could use this flaw to crash the QEMU-process instance on the host (denial of service).
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:58:46 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1376777    
Bug Blocks: 1365400    

Description Prasad Pandit 2016-09-16 11:37:38 UTC
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

  -> http://www.openwall.com/lists/oss-security/2016/09/16/5

Comment 1 Prasad Pandit 2016-09-16 11:37:43 UTC

Name: Li Qiang (360.cn Inc.)

Comment 2 Prasad Pandit 2016-09-16 11:38:44 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1376777]