Bug 1205321

Summary: qemu: malicious PRDT flow from guest to host
Product: [Other] Security Response Reporter: Vasyl Kaigorodov <vkaigoro>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED DUPLICATE QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: amit.shah, berrange, carnil, cfergeau, dwmw2, itamar, lkundrak, pbonzini, rjones, scottt.tw, virt-maint
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-03-24 17:08:11 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1205322, 1205323    
Bug Blocks:    

Description Vasyl Kaigorodov 2015-03-24 16:44:52 UTC 
Due to inconsistent error checking, Qemu emulator allows malicious PRDT data to flow from a guest to the host's IDE or AHCI controllers. This could result in infinite loop or memory leakage on the host leading to unbounded resource consumption.

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

Upstream fix: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=3251bdcf1c67427d964517053c3d185b46e618e8
CVE request: http://seclists.org/oss-sec/2015/q1/984
Comment 1 Vasyl Kaigorodov 2015-03-24 16:45:22 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1205322]
Affects: epel-all [bug 1205323]
Comment 2 Vasyl Kaigorodov 2015-03-24 17:08:11 UTC 

*** This bug has been marked as a duplicate of bug 1204919 ***