Linux/Unix 主機上安裝了一個或多個受到弱點影響的套件，且供應商未提供可用的修補程式。

  - 已解決 Linux 核心中的下列弱點：KVM: SVM: Use online_vcpus, not created_vcpus, to iterate over vCPUs Use the kvm_for_each_vcpu() helper to iterate over vCPUs when encrypting VMSAs for SEV, which effectively switches to use online_vcpus instead of created_vcpus. This fixes a possible null-pointer dereference as created_vcpus does not guarantee a vCPU exists, since it is updated at the very beginning of KVM_CREATE_VCPU. created_vcpus exists to allow the bulk of vCPU creation to run in parallel, while still correctly restricting the max number of max vCPUs. (CVE-2021-47062)

請注意，Nessus 依賴供應商報告的套件存在。

Linux/Unix 主机中安装的一个或多个程序包受到一个漏洞影响，而供应商没有提供补丁程序。

  - 已修复 Linux 内核中的下列漏洞：KVM: SVM: Use online_vcpus, not created_vcpus, to iterate over vCPUs Use the kvm_for_each_vcpu() helper to iterate over vCPUs when encrypting VMSAs for SEV, which effectively switches to use online_vcpus instead of created_vcpus. This fixes a possible null-pointer dereference as created_vcpus does not guarantee a vCPU exists, since it is updated at the very beginning of KVM_CREATE_VCPU. created_vcpus exists to allow the bulk of vCPU creation to run in parallel, while still correctly restricting the max number of max vCPUs. (CVE-2021-47062)

请注意，Nessus 依赖供应商报告的程序包是否存在进行判断。

Linux/Unix ホストには、ベンダーが提供するパッチが利用できない脆弱性の影響を受ける複数のパッケージがインストールされています。

  - Linux カーネルでは、以下の脆弱性が解決されています: KVM: SVM: Use online_vcpus, not created_vcpus, to iterate over vCPUs Use the kvm_for_each_vcpu() helper to iterate over vCPUs when encrypting VMSAs for SEV, which effectively switches to use online_vcpus instead of created_vcpus. This fixes a possible null-pointer dereference as created_vcpus does not guarantee a vCPU exists, since it is updated at the very beginning of KVM_CREATE_VCPU. created_vcpus exists to allow the bulk of vCPU creation to run in parallel, while still correctly restricting the max number of max vCPUs. (CVE-2021-47062)

Nessus は、ベンダーによって報告されたパッケージの存在に依存していることに注意してください。

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

  - In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Use online_vcpus, not     created_vcpus, to iterate over vCPUs Use the kvm_for_each_vcpu() helper to iterate over vCPUs when     encrypting VMSAs for SEV, which effectively switches to use online_vcpus instead of created_vcpus. This     fixes a possible null-pointer dereference as created_vcpus does not guarantee a vCPU exists, since it is     updated at the very beginning of KVM_CREATE_VCPU. created_vcpus exists to allow the bulk of vCPU creation     to run in parallel, while still correctly restricting the max number of max vCPUs. (CVE-2021-47062)

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

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-013323 advisory.

    In the Linux kernel, the following vulnerability has been resolved:

    KVM: SVM: Use online_vcpus, not created_vcpus, to iterate over vCPUs

    Use the kvm_for_each_vcpu() helper to iterate over vCPUs when encrypting     VMSAs for SEV, which effectively switches to use online_vcpus instead of     created_vcpus.  This fixes a possible null-pointer dereference as     created_vcpus does not guarantee a vCPU exists, since it is updated at     the very beginning of KVM_CREATE_VCPU.  created_vcpus exists to allow the     bulk of vCPU creation to run in parallel, while still correctly     restricting the max number of max vCPUs.

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

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

ID	名前	製品	ファミリー	公開日	更新日	深刻度
250137	Linux Distros 未修補的弱點：CVE-2021-47062	Nessus	Misc.	2025/8/15	2026/7/17	medium
250137	Linux Distros 未修补的漏洞：CVE-2021-47062	Nessus	Misc.	2025/8/15	2026/7/17	medium
250137	Linux Distros のパッチ未適用の脆弱性: CVE-2021-47062	Nessus	Misc.	2025/8/15	2026/7/17	medium
250137	Linux Distros Unpatched Vulnerability : CVE-2021-47062	Nessus	Misc.	2025/8/15	2026/7/17	medium
307960	Unity Linux 20.1070e Security Update: kernel (UTSA-2026-013323)	Nessus	Unity Linux Local Security Checks	2026/4/21	2026/4/21	medium
239060	TencentOS Server 4: kernel (TSSA-2024:0958)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/23	high

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