CVE-2010-0306

NameCVE-2010-0306
DescriptionThe 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.
SourceCVE (at NVD; oss-sec, fulldisc, OSVDB, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SuSE, Mageia, more)
ReferencesDSA-1996-1, DSA-2010-1
NVD severitymedium (attack range: local, user-initiated)
Debian/oldstablenot vulnerable.
Debian/stablenot known to be vulnerable.
Debian/testingnot known to be vulnerable.
Debian/unstablenot known to be vulnerable.

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
linux-2.6 (PTS)squeeze (security), squeeze2.6.32-48squeeze6fixed
squeeze (lts)2.6.32-48squeeze11fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
kvmsource(unstable)(unfixed)medium
kvmsourcelenny72+dfsg-5~lenny5mediumDSA-2010-1
linux-2.6source(unstable)2.6.32-8medium
linux-2.6sourceetch(not affected)
linux-2.6sourcelenny2.6.26-21lenny3mediumDSA-1996-1
linux-2.6.24source(unstable)(not affected)

Notes

[etch] - linux-2.6 <not-affected> (kvm introduced in 2.6.25)
- linux-2.6.24 <not-affected> (kvm introduced in 2.6.25)

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