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    CVE-2016-9777

    KVM in the Linux kernel before 4.8.12, when I/O APIC is enabled, does not properly restrict the VCPU index, which allows guest OS users to gain host OS privileges or cause a denial of service (out-of-bounds array access and host OS crash) via a crafted interrupt request, related to arch/x86/kvm/ioapic.c and arch/x86/kvm/ioapic.h.

    Published:Nov 23, 2016
    Last Modified:Apr 12, 2025
    EPS:Dec 28, 2016
    EPSS Score:0.00067
    CVSS Score:7.8

    Affected Products

    Vendor
    Linux
    Product
    Linux Kernel

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    References

    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
    http://www.openwall.com/lists/oss-security/2016/12/02/2
    http://www.securityfocus.com/bid/94640
    https://bugzilla.redhat.com/show_bug.cgi?id=1400804
    https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
    http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755
    http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.8.12
    http://www.openwall.com/lists/oss-security/2016/12/02/2
    http://www.securityfocus.com/bid/94640
    https://bugzilla.redhat.com/show_bug.cgi?id=1400804
    https://github.com/torvalds/linux/commit/81cdb259fb6d8c1c4ecfeea389ff5a73c07f5755

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High