Linux Kernel KVM 'virt/kvm/iommu. c' DoS Vulnerability

Linux Kernel KVM 'virt/kvm/iommu. c' DoS Vulnerability

Release date:
Updated on: 2014-09-03

Affected Systems:
Linux kernel <= 3.16.1
Description:
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Bugtraq id: 69489
CVE (CAN) ID: CVE-2014-3601

Linux Kernel is the Kernel of the Linux operating system.

In versions earlier than Linux kernel 3.16.1, virt/kvm/iommu. when the function kvm_iommu_map_pages in c fails to process the ing, the page number is incorrectly calculated. This allows the client OS user to cause a denial of service by triggering a large gfn value, or, if a small gfn value is triggered, the page is permanently fixed, causing a denial of service.

<* Source: Jack Morgenstein
*>

Suggestion:
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Vendor patch:

Linux
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The vendor has released a patch to fix this security problem. Please download it from the vendor's homepage:

Https://github.com/torvalds/linux/commit/350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7
Https://bugzilla.redhat.com/show_bug.cgi? Id = 1131951
Http://git.kernel.org /? P = linux/kernel/git/torvalds/linux-2.6.git; a = commit; h = 350b8bdd689cd2ab2c67c8a86a0be86cfa0751a7

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