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CVE-2010-0306

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does...

4.1 Medium

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.

Exploit likelihood

0.38%Down 1.5 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.1

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.

Record
CVE-2010-0306
CVSS 2.0
4.1 MediumAV:L/AC:M/Au:S/C:P/I:P/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2010-0306
Updated
2026-11-02
EUVDEUVD-2010-0337 No score

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.

Record
EUVD-2010-0337
Updated
2026-11-03
GitHub AdvisoriesGHSA-xpcm-5q5j-h76x No score

The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does...

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.

Record
GHSA-xpcm-5q5j-h76x
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
linux-2.6
Debian:5.0
From an advisory covering 13 CVEs
 before 2.6.26-21lenny3, plus listed versions
2.6.26-132.6.26-13lenny22.6.26-13lenny2~bpo40+12.6.26-142.6.26-15
Show 22 moreShow less
2.6.26-15lenny12.6.26-15lenny22.6.26-15lenny32.6.26-15~bpo40+12.6.26-15~bpo40+22.6.26-162.6.26-172.6.26-17lenny12.6.26-17lenny22.6.26-17lenny2~bpo40+12.6.26-17~bpo40+12.6.26-182.6.26-192.6.26-19lenny12.6.26-19lenny22.6.26-19~bpo40+12.6.26-202.6.26-20~bpo40+12.6.26-212.6.26-21lenny12.6.26-21lenny22.6.26-21~bpo40+1
2.6.26-21lenny3
kvm
Debian:5.0
From an advisory covering 4 CVEs
 before 72+dfsg-5~lenny5, plus listed versions
72+dfsg-472+dfsg-5~lenny172+dfsg-5~lenny272+dfsg-5~lenny372+dfsg-5~lenny4
72+dfsg-5~lenny5
kmod-kvm
Red Hat:rhel_virtualization:5::client
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm
Red Hat:rhel_virtualization:5::client
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm-debuginfo
Red Hat:rhel_virtualization:5::client
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm-qemu-img
Red Hat:rhel_virtualization:5::client
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm-tools
Red Hat:rhel_virtualization:5::client
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kmod-kvm
Red Hat:rhel_virtualization:5::server
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm
Red Hat:rhel_virtualization:5::server
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm-debuginfo
Red Hat:rhel_virtualization:5::server
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
Show 4 moreShow less
Affected packages
PackageAffectedFixed
kvm-qemu-img
Red Hat:rhel_virtualization:5::server
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
kvm-tools
Red Hat:rhel_virtualization:5::server
From an advisory covering 4 CVEs
 before 0:83-105.el5_4.22
0:83-105.el5_4.22
rhev-hypervisor
Red Hat:enterprise_linux:5::hypervisor
From an advisory covering 8 CVEs
 before 0:5.4-2.1.8.el5_4rhev2_1
0:5.4-2.1.8.el5_4rhev2_1
rhev-hypervisor-pxe
Red Hat:enterprise_linux:5::hypervisor
From an advisory covering 8 CVEs
 before 0:5.4-2.1.8.el5_4rhev2_1
0:5.4-2.1.8.el5_4rhev2_1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2010-0306 is a medium vulnerability (CVSS 4.1) in Kvm Qumranet Kvm, published February 12, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 31st percentile. No source names a fixed version.

References

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