Bug 1131951 (CVE-2014-3601) - CVE-2014-3601 kernel: kvm: invalid parameter passing in kvm_iommu_map_pages()
Summary: CVE-2014-3601 kernel: kvm: invalid parameter passing in kvm_iommu_map_pages()
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-3601
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:
Depends On: 1131952 1131953 1144366
Blocks: 1131958
TreeView+ depends on / blocked
 
Reported: 2014-08-20 11:36 UTC by Petr Matousek
Modified: 2023-05-12 04:52 UTC (History)
17 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A flaw was found in the way the Linux kernel's kvm_iommu_map_pages() function handled IOMMU mapping failures. A privileged user in a guest with an assigned host device could use this flaw to crash the host.
Clone Of:
Environment:
Last Closed: 2019-06-08 02:34:32 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:1392 0 normal SHIPPED_LIVE Important: kernel security, bug fix, and enhancement update 2014-10-14 01:28:44 UTC

Description Petr Matousek 2014-08-20 11:36:36 UTC 
A flaw was found in the way iommu mapping failures were handled in
kvm_iommu_map_pages() function in the Linux kernel. A privileged user in the
guest could use this flaw to crash the host in case the guest has access to
passed in device.

Acknowledgements:

Red Hat would like to thank Jack Morgenstein of Mellanox for reporting this issue; the security impact of this issue was discovered by Michael Tsirkin of Red Hat.
Comment 2 Petr Matousek 2014-08-20 11:41:39 UTC 
Upstream fix:

http://git.kernel.org/cgit/virt/kvm/kvm.git/commit/?id=350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
Comment 5 Petr Matousek 2014-09-19 09:37:25 UTC 
Statement:

This issue did not affect the Linux kernel versions as shipped with Red Hat Enterprise Linux 7 and Red Hat Enterprise MRG 2. Future kvm updates for Red Hat Enterprise Linux 5 and Linux kernel updates for Red Hat Enterprise Linux 6 may address this issue.
Comment 6 Martin Prpič 2014-10-10 08:45:19 UTC 
IssueDescription:

A flaw was found in the way the Linux kernel's kvm_iommu_map_pages() function handled IOMMU mapping failures. A privileged user in a guest with an assigned host device could use this flaw to crash the host.
Comment 7 errata-xmlrpc 2014-10-14 06:17:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:1392 https://rhn.redhat.com/errata/RHSA-2014-1392.html
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