The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing…
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-264.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kvm_qumranet:kvm:83:*:*:*:*:*:*:* | 83 | Vulnerable | Kvm Qumranet |
- cpe:2.3:a:kvm_qumranet:kvm:83:*:*:*:*:*:*:* Versions 83 Vulnerable ·Kvm Qumranet
Remediation
Red Hat 2 advisories
- RHSA-2010:0095 Released 2010-02-09 · Red Hat rating Importantrhev-hypervisor security and bug fix update
- Red Hat Enterprise Virtualization Hypervisor 5 rhev-hypervisor-5.4-2.1.8.el5_4rhev2_1, rhev-hypervisor-pxe-5.4-2.1.8.el5_4rhev2_1
- RHSA-2010:0088 Released 2010-02-09 · Red Hat rating Importantkvm security and bug fix update
- Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) kmod-kvm-83-105.el5_4.22, kvm-83-105.el5_4.22, kvm-qemu-img-83-105.el5_4.22 +1
- Red Hat Enterprise Linux Virtualization (v. 5 server) kmod-kvm-83-105.el5_4.22, kvm-83-105.el5_4.22, kvm-qemu-img-83-105.el5_4.22 +1
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Desktop Multi OS (v. 5 client) | Fixed | RHSA-2010:0088 |
| Red Hat Enterprise Linux Virtualization (v. 5 server) | Fixed | RHSA-2010:0088 |
| Red Hat Enterprise Virtualization Hypervisor 5 | Fixed | RHSA-2010:0095 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-0306
- 2026-10-03 Alias added: GHSA-xpcm-5q5j-h76x
References
More Kvm Qumranet Kvm vulnerabilities
- TI-2008-04330 Heap-based buffer overflow in the Cirrus VGA implementation in (1) KVM before kvm-82 and… CVSS 2.0HIGH 7.2
- TI-2008-02285 The protocol_client_msg function in vnc.c in the VNC server in (1) Qemu 0.9.1 and earlier… CVSS 2.0MEDIUM 5.0
- TI-2010-00397 The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing… CVSS 2.0MEDIUM 4.4
Sources
- CVE-2010-0306 · CVE Program
- CVE-2010-0306 · NVD
- FIRST EPSS
- GHSA-xpcm-5q5j-h76x · GitHub Advisory Database · CC BY 4.0
- CVE-2010-0306 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences