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Bug 1389712 - (CVE-2016-9106) CVE-2016-9106 Qemu: 9pfs: memory leakage in v9fs_write
CVE-2016-9106 Qemu: 9pfs: memory leakage in v9fs_write
Status: NEW
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=20161012,reported=2...
: Security
Depends On: 1389713 1389714
Blocks: 1389508
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Reported: 2016-10-28 05:50 EDT by Prasad J Pandit
Modified: 2018-07-18 11:05 EDT (History)
36 users (show)

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Description Prasad J Pandit 2016-10-28 05:50:41 EDT 
Quick Emulator(Qemu) built with the VirtFS, host directory sharing via Plan 9
File System(9pfs) support, is vulnerable to a memory leakage issue. It
could occur when calling v9fs_write call.

A privileged user inside guest could use this flaw to leak the host memory
bytes resulting in DoS for other services.

Upstream patches:
-----------------
  https://lists.gnu.org/archive/html/qemu-devel/2016-10/msg02623.html

Reference:
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  -> http://wiki.qemu.org/Documentation/9psetup
Comment 1 Prasad J Pandit 2016-10-28 05:51:12 EDT 
Acknowledgments:

Name: Li Qiang (360.cn Inc.)
Comment 2 Prasad J Pandit 2016-10-28 05:52:42 EDT 
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1389714]
Comment 3 Prasad J Pandit 2016-10-28 05:53:05 EDT 
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1389713]
Comment 4 Andrej Nemec 2016-10-31 10:49:58 EDT 
CVE assignment:

http://seclists.org/oss-sec/2016/q4/282
Comment 5 Cole Robinson 2017-01-16 13:32:11 EST 
commit fdfcc9aeea1492f4b819a24c94dfb678145b1bf9
Author: Li Qiang <liqiang6-s@360.cn>
Date:   Mon Oct 17 14:13:58 2016 +0200

    9pfs: fix memory leak in v9fs_write
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