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Bug 1374702 - (CVE-2016-7170) CVE-2016-7170 Qemu: vmware_vga: OOB stack memory access when processing svga command
CVE-2016-7170 Qemu: vmware_vga: OOB stack memory access when processing svga ...
Status: CLOSED UPSTREAM
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20160908,repor...
: Security
: 1329193 (view as bug list)
Depends On: 1374709 1398112 1398113 1398114 1398115 1398117 1398118 1398119 1398120 1398121 1398122 1398123 1398124
Blocks: 1329196 1348571 1370384
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Reported: 2016-09-09 09:01 EDT by Prasad J Pandit
Modified: 2017-01-12 13:18 EST (History)
40 users (show)

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Doc Text:
Quick Emulator (QEMU) built with the VMware-SVGA chipset emulation support is vulnerable to an OOB stack memory write issue. It could occur while processing VGA commands in 'vmsvga_fifo_run' routine. A privileged user inside guest could use this flaw to crash the QEMU process resulting in DoS.
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Clone Of:
Environment:
Last Closed: 2016-12-09 04:00:57 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Prasad J Pandit 2016-09-09 09:01:55 EDT 
Quick Emulator(Qemu) built with the VMware-SVGA "chipset" emulation support
is vulnerable to an OOB stack memory write issue. It could occur while
processing VGA commands in 'vmsvga_fifo_run' routine.

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

Upstream fix:
-------------
  -> git.qemu.org/?p=qemu.git;a=commit;h=167d97a3def77ee2dbf6e908b0ecbfe2103977db

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2016/09/09/7
Comment 1 Prasad J Pandit 2016-09-09 09:02:31 EDT 
Acknowledgments:

Name: Qinghao Tang, Li Qiang (360.cn Inc.)
Comment 2 Prasad J Pandit 2016-09-09 09:04:16 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1374709]
Comment 12 Prasad J Pandit 2017-01-12 13:18:43 EST 
*** Bug 1329193 has been marked as a duplicate of this bug. ***
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