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Bug 616874 (CVE-2017-8380) - <app-emulation/qemu-2.9.0-r2: scsi: megasas: out-of-bounds read in megasas_mmio_write
Summary: <app-emulation/qemu-2.9.0-r2: scsi: megasas: out-of-bounds read in megasas_mm...
Alias: CVE-2017-8380
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:
Blocks: CVE-2017-8112 CVE-2017-8309 CVE-2017-8379 CVE-2017-7493
  Show dependency tree
Reported: 2017-04-28 13:20 UTC by Agostino Sarubbo
Modified: 2017-06-06 06:50 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---
stable-bot: sanity-check+


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Description Agostino Sarubbo gentoo-dev 2017-04-28 13:20:59 UTC
From ${URL} :

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:

@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 2017-04-29 21:35:08 UTC
commit ea97b0c7b7466e74a67ad714b07509c752f5870c
Author: Matthias Maier <>
Date:   Sat Apr 29 16:01:30 2017 -0500

    app-emulation/qemu: Various security patches for 2.9.0
    bug 616636, CVE-2017-8112
    bug 616870 [1]
    bug 616872 [2]
    bug 616874 [1]
    [1] minor change, queued upstream, no CVE assigned yet
    [2] queued upstream, no CVE assigned yet
    Package-Manager: Portage-2.3.3, Repoman-2.3.2
Comment 2 Matthias Maier gentoo-dev 2017-04-29 21:35:37 UTC
Let's wait with stabilization of 2.9.0-r1 a couple of days.
Comment 3 Yury German Gentoo Infrastructure gentoo-dev 2017-04-30 12:08:42 UTC
Call it whenever you are ready, This will be the main bug for stabilization.
Comment 4 Matthias Maier gentoo-dev 2017-05-18 04:28:18 UTC
Arches, please stabilize


Target keywords: amd64 x86
Comment 5 Agostino Sarubbo gentoo-dev 2017-05-18 12:40:23 UTC
amd64 stable
Comment 6 Agostino Sarubbo gentoo-dev 2017-05-20 09:35:32 UTC
x86 stable.

Maintainer(s), please cleanup.
Security, please vote.
Comment 7 Yury German Gentoo Infrastructure gentoo-dev 2017-05-21 07:45:14 UTC
Maintainer(s), Thank you for your work.

One of the dependency bugs is a B2 (GLSA Required). 
New GLSA Request filed.

Maintainer(s), please drop the vulnerable version(s).
Comment 8 Yury German Gentoo Infrastructure gentoo-dev 2017-06-03 14:23:31 UTC
Maintainer(s), please drop the vulnerable version(s).
Comment 9 Matthias Maier gentoo-dev 2017-06-03 14:44:20 UTC
commit c7f0b12f5a2baa48c18bc90e61ac36a43a465cd7 (HEAD -> master, origin/master, origin/HEAD)
Author: Matthias Maier <>
Date:   Sat Jun 3 09:42:35 2017 -0500

    app-emulation/qemu: drop vulnerable, bug #616874
    Package-Manager: Portage-2.3.6, Repoman-2.3.2
Comment 10 GLSAMaker/CVETool Bot gentoo-dev 2017-06-06 06:50:23 UTC
This issue was resolved and addressed in
 GLSA 201706-03 at
by GLSA coordinator Yury German (BlueKnight).