Bug 1689426 (CVE-2019-3882) - CVE-2019-3882 kernel: denial of service vector through vfio DMA mappings
Summary: CVE-2019-3882 kernel: denial of service vector through vfio DMA mappings
Status: NEW
Alias: CVE-2019-3882
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20190402,repor...
Keywords: Security
Depends On: 1695589 1695590 1695591 1695592 1695593 1695571
Blocks: 1689427
TreeView+ depends on / blocked
 
Reported: 2019-03-15 21:27 UTC by Pedro Sampaio
Modified: 2019-06-08 23:55 UTC (History)
46 users (show)

(edit)
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).
Clone Of:
(edit)
Last Closed:


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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.)


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