Bug 1329596

Summary: qemu-kvm: Infinite loop vulnerability in pcnet_transmit()
Product: [Other] Security Response Reporter: Adam Mariš <amaris>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED DUPLICATE QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: abaron, ailan, alonbl, aortega, apevec, areis, ayoung, bmcclain, chrisw, dallan, dblechte, drjones, eedri, gklein, gkotton, imammedo, jen, jjoyce, jschluet, knoel, lhh, lpeer, markmc, mgoldboi, michal.skrivanek, mkenneth, mrezanin, mst, pbonzini, ppandit, rbalakri, rbryant, rkrcmar, sclewis, security-response-team, sherold, srevivo, tdecacqu, vkuznets, ykaul, ylavi
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: 2017-02-07 07:30:52 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:    
Bug Blocks: 1326713    
Attachments:
Description Flags
GDB report none

Description Adam Mariš 2016-04-22 10:19:47 UTC 
Quick Emulator(Qemu) built with the AMD PC-Net II emulator support is vulnerable to an infinite loop issue. It could occur while transmitting packets via pcnet_transmit().

A privileged user/process inside guest could use this issue to crash the Qemu process on the host leading to DoS.

Upstream patch
--------------
  -> http://git.qemu-project.org/?p=qemu.git;a=commit;h=34e29ce754c02bb6b3bdd244fbb85033460feaff
Comment 1 Adam Mariš 2016-04-22 10:20:08 UTC 
Acknowledgments:

Name: Li Qiang (Qihoo 360 Inc.)
Comment 2 Adam Mariš 2016-04-22 10:23:16 UTC 
Created attachment 1149714 [details]
GDB report
Comment 4 Prasad Pandit 2017-02-07 07:30:52 UTC 

*** This bug has been marked as a duplicate of bug 1329538 ***