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Bug 593034 (CVE-2016-7155) - <app-emulation/qemu-2.7.0-r2: scsi: pvscsi: OOB read and infinite loop while setting descriptor rings (CVE-2016-7155)
Summary: <app-emulation/qemu-2.7.0-r2: scsi: pvscsi: OOB read and infinite loop while ...
Alias: CVE-2016-7155
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [glsa cve]
Depends on: CVE-2016-7157
  Show dependency tree
Reported: 2016-09-07 09:35 UTC by Agostino Sarubbo
Modified: 2016-09-26 00:39 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---


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Description Agostino Sarubbo gentoo-dev 2016-09-07 09:35:46 UTC
From ${URL} :

Quick Emulator(Qemu) built with the VMWARE PVSCSI paravirtual SCSI bus 
emulation support is vulnerable to an OOB access and/or infinite loop issue. 
It could occur while processing SCSI commands 'PVSCSI_CMD_SETUP_RINGS'.

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

Upstream patch:


@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.
Comment 1 Matthias Maier gentoo-dev 2016-09-09 05:25:58 UTC
Stabilization on bug #593196

commit b28fcd11405545eb2e4973f96823337531eebb08
Author: Matthias Maier <>
Date:   Fri Sep 9 00:10:05 2016 -0500

    app-emulation/qemu: fix static-user dep, security patches, bug #593038
    This commit resolves
      bug #591202
      bug #593024
      bug #593034 CVE-2016-7155
      bug #593036 CVE-2016-7156
      bug #593038 CVE-2016-7157
    Package-Manager: portage-2.2.28
Comment 2 GLSAMaker/CVETool Bot gentoo-dev 2016-09-26 00:39:15 UTC
This issue was resolved and addressed in
 GLSA 201609-01 at
by GLSA coordinator Yury German (BlueKnight).