CVE-2010-0306 Information

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.

Reference

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/oval3Aorg.mitre.oval3Adef3A10953 https://rhn.redhat.com/errata/RHSA-2010-0088.html https://rhn.redhat.com/errata/RHSA-2010-0095.html