The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive     information from kernel memory or cause a denial of service (use-after-free) via a crafted application     that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt. (CVE-2017-2584)

Note that Nessus relies on the presence of the package as reported by the vendor.

According to the versions of the kvm package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The msr_mtrr_valid function in arch/x86/kvm/mtrr.c in     the Linux kernel before 4.6.1 supports MSR 0x2f8, which     allows guest OS users to read or write to the     kvm_arch_vcpu data structure, and consequently obtain     sensitive information or cause a denial of service     (system crash), via a crafted ioctl     call.(CVE-2016-3713)

  - Linux kernel built with the Kernel-based Virtual     Machine (CONFIG_KVM) support is vulnerable to a null     pointer dereference flaw. It could occur on x86     platform, when emulating an undefined instruction. An     attacker could use this flaw to crash the host kernel     resulting in DoS.(CVE-2016-8630)

  - Linux kernel built with the Kernel-based Virtual     Machine (CONFIG_KVM) support was vulnerable to an     incorrect segment selector(SS) value error. The error     could occur while loading values into the SS register     in long mode. A user or process inside a guest could     use this flaw to crash the guest, resulting in DoS or     potentially escalate their privileges inside the     guest.(CVE-2017-2583)

  - arch/x86/kvm/emulate.c in the Linux kernel through     4.9.3 allows local users to obtain sensitive     information from kernel memory or cause a denial of     service (use-after-free) via a crafted application that     leverages instruction emulation for fxrstor, fxsave,     sgdt, and sidt.(CVE-2017-2584)

  - A reachable assertion failure flaw was found in the     Linux kernel built with KVM virtualisation(CONFIG_KVM)     support with Virtual Function I/O feature (CONFIG_VFIO)     enabled. This failure could occur if a malicious guest     device sent a virtual interrupt (guest IRQ) with a     larger (i1/4z1024) index value.(CVE-2017-1000252)

  - An industry-wide issue was found in the way many modern     microprocessor designs have implemented speculative     execution of instructions (a commonly used performance     optimization). There are three primary variants of the     issue which differ in the way the speculative execution     can be exploited. Variant CVE-2017-5715 triggers the     speculative execution by utilizing branch target     injection. It relies on the presence of a     precisely-defined instruction sequence in the     privileged code as well as the fact that memory     accesses may cause allocation into the microprocessor's     data cache even for speculatively executed instructions     that never actually commit (retire). As a result, an     unprivileged attacker could use this flaw to cross the     syscall and guest/host boundaries and read privileged     memory by conducting targeted cache side-channel     attacks.(CVE-2017-5715)

  - A flaw was found in the way the Linux KVM module     processed the trap flag(TF) bit in EFLAGS during     emulation of the syscall instruction, which leads to a     debug exception(#DB) being raised in the guest stack. A     user/process inside a guest could use this flaw to     potentially escalate their privileges inside the guest.
    Linux guests are not affected by this.(CVE-2017-7518)

  - Linux kernel compiled with the KVM virtualization     (CONFIG_KVM) support is vulnerable to an out-of-bounds     read access issue. It could occur when emulating vmcall     instructions invoked by a guest. A guest user/process     could use this flaw to disclose kernel memory     bytes.(CVE-2017-17741)

  - Systems with microprocessors utilizing speculative     execution and speculative execution of memory reads     before the addresses of all prior memory writes are     known may allow unauthorized disclosure of information     to an attacker with local user access via a     side-channel analysis, aka Speculative Store Bypass     (SSB), Variant 4.(CVE-2018-3639)

  - kernel: kvm: guest userspace to guest kernel     write(CVE-2018-10853)

  - In the Linux kernel before 4.20.8,     kvm_ioctl_create_device in virt/kvm/kvm_main.c     mishandles reference counting because of a race     condition, leading to a use-after-free.(CVE-2019-6974)

  - The KVM implementation in the Linux kernel through     4.20.5 has an Information Leak.(CVE-2019-7222)

  - The KVM implementation in the Linux kernel through     4.20.5 has a Use-after-Free.(CVE-2019-7221)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3208-2 advisory.

    USN-3208-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the     corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu     14.04 LTS.

    It was discovered that the generic SCSI block layer in the Linux kernel did not properly restrict write     operations in certain situations. A local attacker could use this to cause a denial of service (system     crash) or possibly gain administrative privileges. (CVE-2016-10088)

    CAI Qian discovered that the sysctl implementation in the Linux kernel did not properly perform reference     counting in some situations. An unprivileged attacker could use this to cause a denial of service (system     hang). (CVE-2016-9191)

    Jim Mattson discovered that the KVM implementation in the Linux kernel mismanages the #BP and #OF     exceptions. A local attacker in a guest virtual machine could use this to cause a denial of service (guest     OS crash). (CVE-2016-9588)

    Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in the Linux kernel did not     properly emulate instructions on the SS segment register. A local attacker in a guest virtual machine     could use this to cause a denial of service (guest OS crash) or possibly gain administrative privileges in     the guest OS. (CVE-2017-2583)

    Dmitry Vyukov discovered that the KVM implementation in the Linux kernel improperly emulated certain     instructions. A local attacker could use this to obtain sensitive information (kernel memory).
    (CVE-2017-2584)

    It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in the Linux kernel did not     properly initialize memory related to logging. A local attacker could use this to expose sensitive     information (kernel memory). (CVE-2017-5549)

    Andrey Konovalov discovered a use-after-free vulnerability in the DCCP implementation in the Linux kernel.
    A local attacker could use this to cause a denial of service (system crash) or possibly gain     administrative privileges. (CVE-2017-6074)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名稱	產品	系列	已發布	已更新	嚴重性
243673	Linux Distros Unpatched Vulnerability : CVE-2017-2584	Nessus	Misc.	2025/8/5	2026/7/17	high
124953	EulerOS Virtualization 3.0.1.0 : kvm (EulerOS-SA-2019-1450)	Nessus	Huawei Local Security Checks	2019/5/14	2026/1/9	high
97323	Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3208-2)	Nessus	Ubuntu Local Security Checks	2017/2/22	2024/8/27	high

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