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    SubjectRe: [Stable-review] [141/145] KVM: x86 emulator: Check CPL level during privilege instruction emulation
    On Fri, 2010-03-12 at 16:27 -0800, Greg KH wrote:
    > 2.6.32-stable review patch. If anyone has any objections, please let me know.
    >
    > ----------------
    > From: Gleb Natapov <gleb@redhat.com>
    >
    > commit e92805ac1228626c59c865f2f4e9059b9fb8c97b upstream.
    >
    > Add CPL checking in case emulator is tricked into emulating
    > privilege instruction from userspace.

    There were more security fixes released along with this, which surely
    belong in a stable update:

    1871c6020d7308afb99127bba51f04548e7ca84e KVM: x86 emulator: fix memory access during x86 emulation
    f850e2e603bf5a05b0aee7901857cf85715aa694 KVM: x86 emulator: Check IOPL level during io instruction emulation
    d4c6a1549c056f1d817e8f6f2f97d8b44933472f KVM: x86 emulator: Fix popf emulation

    Ben.

    --
    Ben Hutchings
    It's easier to fight for one's principles than to live up to them.
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