Bug 1368980 (CVE-2016-6833) - CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
Summary: CVE-2016-6833 Qemu: net: vmxnet3: use-after-free while writing to device
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2016-6833
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1368982
Blocks: 1343732
TreeView+ depends on / blocked
 
Reported: 2016-08-22 09:29 UTC by Prasad Pandit
Modified: 2021-02-17 03:26 UTC (History)
37 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2016-11-24 10:12:17 UTC
Embargoed:

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Description Prasad Pandit 2016-08-22 09:29:53 UTC 
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
--------------
  -> 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 Pandit 2016-08-22 09:30:29 UTC 
Acknowledgments:

Name: Li Qiang (Qihoo 360 Inc.)
Comment 2 Prasad Pandit 2016-08-22 09:32:26 UTC 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1368982]
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