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Bug 1368980 - (CVE-2016-6833) CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
Status: CLOSED UPSTREAM
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20160809,reported=2...
: Security
Depends On: 1368982
Blocks: 1343732
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Reported: 2016-08-22 05:29 EDT by Prasad J Pandit
Modified: 2016-11-24 05:12 EST (History)
37 users (show)

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Last Closed: 2016-11-24 05:12:17 EST
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Description Prasad J Pandit 2016-08-22 05:29:53 EDT 
Quick Emulator(Qemu) built with the VMWARE VMXNET3 NIC device support is
vulnerable to a use-after-free issue. It could occur while writing to the
device once it's disabled.

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

Upstream patch
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  -> http://git.qemu.org/?p=qemu.git;a=commit;h=6c352ca9b4ee3e1e286ea9e8434bd8e69ac7d0d8

Reference:
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  -> http://www.openwall.com/lists/oss-security/2016/08/18/3
Comment 1 Prasad J Pandit 2016-08-22 05:30:29 EDT 
Acknowledgments:

Name: Li Qiang (Qihoo 360 Inc.)
Comment 2 Prasad J Pandit 2016-08-22 05:32:26 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1368982]
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