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Bug 1389712 (CVE-2016-9106) - CVE-2016-9106 Qemu: 9pfs: memory leakage in v9fs_write
Summary: CVE-2016-9106 Qemu: 9pfs: memory leakage in v9fs_write
Alias: CVE-2016-9106
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1389713 1389714
TreeView+ depends on / blocked
Reported: 2016-10-28 09:50 UTC by Prasad Pandit
Modified: 2021-02-17 03:05 UTC (History)
36 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2019-06-08 03:01:39 UTC

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Description Prasad Pandit 2016-10-28 09:50:41 UTC
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:


Comment 1 Prasad Pandit 2016-10-28 09:51:12 UTC

Name: Li Qiang ( Inc.)

Comment 2 Prasad Pandit 2016-10-28 09:52:42 UTC
Created xen tracking bugs for this issue:

Affects: fedora-all [bug 1389714]

Comment 3 Prasad Pandit 2016-10-28 09:53:05 UTC
Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1389713]

Comment 4 Andrej Nemec 2016-10-31 14:49:58 UTC
CVE assignment:

Comment 5 Cole Robinson 2017-01-16 18:32:11 UTC
commit fdfcc9aeea1492f4b819a24c94dfb678145b1bf9
Author: Li Qiang <liqiang6-s>
Date:   Mon Oct 17 14:13:58 2016 +0200

    9pfs: fix memory leak in v9fs_write

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