Bug 1658963 (CVE-2018-20123)

Summary:	CVE-2018-20123 QEMU: pvrdma: memory leakage in device hotplug
Product:	[Other] Security Response	Reporter:	Prasad Pandit <ppandit>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-12-20 05:07:43 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1658964
Bug Blocks:	1649132

Description Prasad Pandit 2018-12-13 09:16:34 UTC

A memory leakage issue was found in the way QEMU initialised its
VMWare's paravirtual RDMA device. In pvrdma_realize() routine, if
an error occurred, it did not release memory resources allocated
to various objects.

A guest user/process could use this flaw to leak host memory,
resulting in DoS for host.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02817.html

Reference:
----------
  -> https://www.openwall.com/lists/oss-security/2018/12/13/4

Comment 1 Prasad Pandit 2018-12-13 09:16:37 UTC

Acknowledgments:

Name: Li Qiang

Comment 2 Prasad Pandit 2018-12-13 09:16:56 UTC

Created qemu tracking bugs for this issue:

Affects: fedora-all [bug 1658964]