Bug 1339155 (CVE-2016-4964)

Summary: CVE-2016-4964 Qemu: scsi: mptsas infinite loop in mptsas_fetch_requests
Product: [Other] Security Response Reporter: Prasad Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: abaron, ailan, amit.shah, apevec, areis, ayoung, berrange, cfergeau, chrisw, drjones, dwmw2, imammedo, itamar, jen, jschluet, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, sclewis, 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:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-08 02:52:38 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: 1339157    
Bug Blocks: 1339119    

Description Prasad Pandit 2016-05-24 09:16:13 UTC
Quick Emulator(Qemu) built with the LSI SAS1068 Host Bus Adapter emulation
support is vulnerable to an infinite loop issue. It could occur while fetching
new requests in mptsas_fetch_requests().

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

Upstream patch:
  -> https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg04027.html

  -> http://www.openwall.com/lists/oss-security/2016/05/24/4

Comment 1 Prasad Pandit 2016-05-24 09:17:30 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1339157]

Comment 2 Prasad Pandit 2016-05-24 12:30:46 UTC

Name: Li Qiang (Qihoo 360 Inc.)

Comment 3 Andrej Nemec 2016-05-24 14:08:56 UTC
CVE assignment via:


Comment 4 Fedora Update System 2016-06-25 19:24:13 UTC
qemu-2.6.0-4.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.