Description
The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.
Published: 2014-11-10
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

No vendor fix or workaround currently provided.

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Advisories
Source ID Title
EUVD EUVD EUVD-2014-8318 The instruction decoder in arch/x86/kvm/emulate.c in the KVM subsystem in the Linux kernel before 3.18-rc2 does not properly handle invalid instructions, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a crafted application that triggers (1) an improperly fetched instruction or (2) an instruction that occupies too many bytes. NOTE: this vulnerability exists because of an incomplete fix for CVE-2014-8480.
History

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Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-06T13:18:48.317Z

Reserved: 2014-10-24T00:00:00.000Z

Link: CVE-2014-8481

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2014-11-10T11:55:09.767

Modified: 2026-05-06T22:30:45.220

Link: CVE-2014-8481

cve-icon Redhat

Severity : Important

Publid Date: 2014-10-13T00:00:00Z

Links: CVE-2014-8481 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses