Upstream information
Description
The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow 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.SUSE information
Overall state of this security issue: Resolved
This issue is currently rated as having moderate severity.
| CVSS detail | National Vulnerability Database | 
|---|---|
| Base Score | 4.4 | 
| Vector | AV:L/AC:M/Au:N/C:P/I:P/A:P | 
| Access Vector | Local | 
| Access Complexity | Medium | 
| Authentication | None | 
| Confidentiality Impact | Partial | 
| Integrity Impact | Partial | 
| Availability Impact | Partial | 
SUSE Timeline for this CVE
CVE page created: Fri Jun 28 03:35:22 2013CVE page last modified: Mon Oct 6 18:16:10 2025