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：io_uring: fix overflows checks in provide buffers Colin reported before possible overflow and sign extension problems in io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce (io_uring: fix provide_buffers sign extension). Do that with help of check_<op>_overflow helpers. And fix struct io_provide_buf::len type, as it doesn't make much sense to keep it signed. (CVE-2021-47040)

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：io_uring: fix overflows checks in provide buffers Colin reported before possible overflow and sign extension problems in io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce (io_uring: fix provide_buffers sign extension). Do that with help of check_<op>_overflow helpers. And fix struct io_provide_buf::len type, as it doesn't make much sense to keep it signed. (CVE-2021-47040)

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: io_uring: fix overflows checks in provide buffers Colin reported before possible overflow and sign extension problems in io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce (io_uring: fix provide_buffers sign extension). Do that with help of check_<op>_overflow helpers. And fix struct io_provide_buf::len type, as it doesn't make much sense to keep it signed. (CVE-2021-47040)

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: io_uring: fix overflows checks in     provide buffers Colin reported before possible overflow and sign extension problems in     io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing useful, see d81269fecb8ce     (io_uring: fix provide_buffers sign extension). Do that with help of check_<op>_overflow helpers. And     fix struct io_provide_buf::len type, as it doesn't make much sense to keep it signed. (CVE-2021-47040)

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-2026-007221 advisory.

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

    io_uring: fix overflows checks in provide buffers

    Colin reported before possible overflow and sign extension problems in     io_provide_buffers_prep(). As Linus pointed out previous attempt did nothing     useful, see d81269fecb8ce (io_uring: fix provide_buffers sign extension).

    Do that with help of check_<op>_overflow helpers. And fix struct     io_provide_buf::len type, as it doesn't make much sense to keep it     signed.

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	名称	产品	系列	发布时间	最近更新时间	严重程度
160459	Amazon Linux 2核心 --advisory ALAS2KERNEL-5。10-2022-002 (ALASKERNEL-5.10-2022-002)	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/9	high
160459	Amazon Linux 2 内核 --advisory ALAS2KERNEL-5。10-2022-002 (ALASKERNEL-5.10-2022-002)	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/9	high
250174	Linux Distros 未修補的弱點：CVE-2021-47040	Nessus	Misc.	2025/8/15	2025/8/15	high
250174	Linux Distros 未修补的漏洞：CVE-2021-47040	Nessus	Misc.	2025/8/15	2025/8/15	high
160459	Amazon Linux 2kernel、 --advisory ALAS2KERNEL-5。10-2022-002 ALASKERNEL-5.10-2022-002	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/9	high
250174	Linux Distros のパッチ未適用の脆弱性: CVE-2021-47040	Nessus	Misc.	2025/8/15	2025/8/15	high
160459	Amazon Linux 2 : kernel, --advisory ALAS2KERNEL-5.10-2022-002 (ALASKERNEL-5.10-2022-002)	Nessus	Amazon Linux Local Security Checks	2022/5/2	2026/2/9	high
250174	Linux Distros Unpatched Vulnerability : CVE-2021-47040	Nessus	Misc.	2025/8/15	2025/8/15	high
195280	EulerOS 2.0 SP10 : kernel (EulerOS-SA-2024-1570)	Nessus	Huawei Local Security Checks	2024/5/9	2024/7/9	high
306917	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: kernel (UTSA-2026-007221)	Nessus	Unity Linux Local Security Checks	2026/4/17	2026/4/21	high
202654	EulerOS Virtualization 2.10.1 : kernel (EulerOS-SA-2024-2002)	Nessus	Huawei Local Security Checks	2024/7/18	2024/7/19	high

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