Bug 1689426 (CVE-2019-3882)

Summary:	CVE-2019-3882 kernel: denial of service vector through vfio DMA mappings
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	acaringi, airlied, alex.williamson, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, eric.auger, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jkacur, john.j5live, jonathan, josef, jross, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, plougher, rt-maint, rvrbovsk, security-response-team, steved, vdronov, williams
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in the Linux kernel's vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS).	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 13:22:14 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:	1695571, 1695589, 1695590, 1695591, 1695592, 1695593
Bug Blocks:	1689427

Description Pedro Sampaio 2019-03-15 21:27:24 UTC

A flaw was found in the Linux kernel vfio interface implementation that permits violation of the user's locked memory limit. If a device is bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may cause a system memory exhaustion and thus a denial of service (DoS).

References:

https://seclists.org/oss-sec/2019/q2/6

A suggested fix:

https://lore.kernel.org/lkml/155414977872.12780.13728555131525362206.stgit@gimli.home/T/#u

Comment 5 Vladis Dronov 2019-04-03 11:37:31 UTC

Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1695571]

Comment 7 Fedora Update System 2019-04-09 01:13:33 UTC

kernel-5.0.6-100.fc28, kernel-headers-5.0.6-100.fc28, kernel-tools-5.0.6-100.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.

Comment 8 Fedora Update System 2019-04-09 02:19:09 UTC

kernel-5.0.6-200.fc29, kernel-headers-5.0.6-200.fc29, kernel-tools-5.0.6-200.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.

Comment 9 Petr Matousek 2019-04-16 09:02:12 UTC

Acknowledgments:

Name: Alex Williamson (Red Hat Inc.)

Comment 10 errata-xmlrpc 2019-08-06 12:04:37 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2029 https://access.redhat.com/errata/RHSA-2019:2029

Comment 11 errata-xmlrpc 2019-08-06 12:07:03 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2043 https://access.redhat.com/errata/RHSA-2019:2043

Comment 12 Product Security DevOps Team 2019-08-06 13:22:14 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-3882

Comment 14 errata-xmlrpc 2019-11-05 20:35:19 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3309 https://access.redhat.com/errata/RHSA-2019:3309

Comment 15 errata-xmlrpc 2019-11-05 21:06:01 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2019:3517 https://access.redhat.com/errata/RHSA-2019:3517