Bug 1444781 (CVE-2017-8086)

Summary: CVE-2017-8086 Qemu: 9pfs: host memory leakage via v9pfs_list_xattr
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 03:11:03 UTC Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1444782, 1444783    
Bug Blocks: 1440146    

Description Prasad Pandit 2017-04-24 09:43:43 UTC 
Quick Emulator(Qemu) built with the virtio-9p back-end support is vulnerable
to a memory leakage issue. It could occur while querying file system extended
attributes via 9pfs_list_xattr() routine.

A privileged user/process inside guest could use this flaw to leak host memory
resulting in Dos.

Upstream patch:
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    -> http://git.qemu.org/?p=qemu.git;a=commit;h=4ffcdef4277a91af15a3c09f7d16af072c29f3f2

Reference:
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  -> http://www.openwall.com/lists/oss-security/2017/04/25/5
Comment 1 Prasad Pandit 2017-04-24 09:44:21 UTC 
Acknowledgments:

Name: Li Qiang (Qihoo 360 Gear Team)
Comment 2 Prasad Pandit 2017-04-24 09:45:47 UTC 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1444783]
Comment 3 Prasad Pandit 2017-04-24 09:46:14 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1444782]