The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through...
Vulnerability Description
The kvm_iommu_map_pages function in virt/kvm/iommu.c in the Linux kernel through 3.16.1 miscalculates the number of pages during the handling of a mapping failure, which allows guest OS users to (1) cause a denial of service (host OS memory corruption) or possibly have unspecified other impact by triggering a large gfn value or (2) cause a denial of service (host OS memory consumption) by triggering a small gfn value that leads to permanently pinned pages.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/torvalds/linux/commit/350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
- http://secunia.com/advisories/60830
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00015.html
- http://www.ubuntu.com/usn/USN-2356-1
- http://www.ubuntu.com/usn/USN-2357-1
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00025.html
- http://www.ubuntu.com/usn/USN-2359-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1131951
- https://exchange.xforce.ibmcloud.com/vulnerabilities/95689
- http://www.ubuntu.com/usn/USN-2358-1
- http://www.securityfocus.com/bid/69489
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CVSS Vectors
Weaknesses (CWE)
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MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.