CVE-2010-0306

Severity: medium (CVSS 4.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-02-12 · updated 2026-06-16
Weakness: CWE-264

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.

Affected products

Kvm Qumranet Kvm: 83

References

http://secunia.com/advisories/38492
http://secunia.com/advisories/38499
http://www.debian.org/security/2010/dsa-1996
http://www.securityfocus.com/bid/38158
https://bugzilla.redhat.com/show_bug.cgi?id=560654
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10953
https://rhn.redhat.com/errata/RHSA-2010-0088.html
https://rhn.redhat.com/errata/RHSA-2010-0095.html
http://secunia.com/advisories/38492
http://secunia.com/advisories/38499
http://www.debian.org/security/2010/dsa-1996
http://www.securityfocus.com/bid/38158

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