Bug 1446577 (CVE-2017-8380)

Summary: CVE-2017-8380 Qemu: scsi: megasas: out-of-bounds read in megasas_mmio_write
Product: [Other] Security Response Reporter: Prasad Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: ailan, amit, apevec, areis, ayoung, berrange, cfergeau, chrisw, cvsbot-xmlrpc, ddepaula, drjones, dwmw2, imammedo, itamar, jen, jjoyce, jschluet, kbasil, knoel, lhh, lpeer, markmc, m.a.young, mkenneth, mrezanin, mst, pbonzini, rbryant, rjones, rkrcmar, robinlee.sysu, sclewis, srevivo, tdecacqu, virt-maint, virt-maint, vkuznets, xen-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2019-06-08 03:11:44 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 1446578    
Bug Blocks: 1440055    

Description Prasad Pandit 2017-04-28 11:31:30 UTC 
Quick Emulator(Qemu) built with the MegaRAID SAS 8708EM2 Host Bus Adapter
emulation support is vulnerable to an out-of-bounds read access issue. It
could occur while performing a MMIO write operation.

A privileged user inside guest could use this flaw to read host memory
leading to potentially crash the Qemu process on the host.

Upstream patch:
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  -> https://lists.gnu.org/archive/html/qemu-devel/2017-04/msg04147.html

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/05/03/3
Comment 1 Prasad Pandit 2017-04-28 11:32:04 UTC 
Acknowledgments:

Name: YY Z(Researcher) Wjjzhang (Tencent.com Inc.)
Comment 2 Prasad Pandit 2017-04-28 11:33:21 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1446578]
Comment 3 Fedora Update System 2017-07-25 21:26:03 UTC 
qemu-2.7.1-7.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.