Access Restriction Bypass Affecting kvm package, versions <0:83-105.0.1.el5_4.22


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-ORACLE5-KVM-2454018
  • published10 Apr 2022
  • disclosed12 Feb 2010

Introduced: 12 Feb 2010

CVE-2010-0306  (opens in a new tab)
CWE-264  (opens in a new tab)

How to fix?

Upgrade Oracle:5 kvm to version 0:83-105.0.1.el5_4.22 or higher.
This issue was patched in ELSA-2010-0088.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kvm package and not the kvm package as distributed by Oracle. See How to fix? for Oracle:5 relevant fixed versions and status.

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.

CVSS Scores

version 3.1