The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.

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Advisories
Source ID Title
EUVD EUVD EUVD-2016-4734 The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in the Linux kernel before 4.6.1 supports MSR 0x2f8, which allows guest OS users to read or write to the kvm_arch_vcpu data structure, and consequently obtain sensitive information or cause a denial of service (system crash), via a crafted ioctl call.
Ubuntu USN Ubuntu USN USN-2978-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2978-2 Linux kernel (Wily HWE) vulnerabilities
Ubuntu USN Ubuntu USN USN-2979-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-2979-2 Linux kernel (Xenial HWE) vulnerabilities
Fixes

Solution

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Workaround

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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-06T00:03:34.494Z

Reserved: 2016-03-30T00:00:00.000Z

Link: CVE-2016-3713

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2016-06-27T10:59:05.563

Modified: 2025-04-12T10:46:40.837

Link: CVE-2016-3713

cve-icon Redhat

Severity : Moderate

Publid Date: 2016-05-16T00:00:00Z

Links: CVE-2016-3713 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses