CVE-2010-0306

kvm: emulator privilege escalation IOPL/CPL level check

Published Feb 12, 2010 CVSS 2.0 · 4.1 Medium EPSS < 1% KEV · Not listed
Description
The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-1996-1 New Linux 2.6.26 packages fix several vulnerabilities
Debian DSA Debian DSA DSA-2010-1 New kvm packages fix several vulnerabilities
EUVD EUVD EUVD-2010-0337 The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not use the Current Privilege Level (CPL) and I/O Privilege Level (IOPL) to restrict instruction execution, which allows guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch, a related issue to CVE-2010-0298.
Ubuntu USN Ubuntu USN USN-947-1 Linux kernel vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 7, 2024, 12:45 AM
Reserved
Jan 12, 2010, 12:00 AM
Status
Modified
Published
Feb 12, 2010, 7:30 PM
Modified
Jun 16, 2026, 11:15 PM
Severity
Important
Public date
Feb 9, 2010, 12:00 AM