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。

  - 在 Linux 核心中，已解決下列弱點： net: qrtr: Avoid potential use after free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last refcount.. (CVE-2021-46973)

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。

  - 在 Linux 内核中，已解决以下漏洞： net: qrtr: Avoid potential use after free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last refcount.. (CVE-2021-46973)

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 カーネルにおいて、以下の脆弱性は解決されました： net: qrtr: Avoid potential use after free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last refcount.. (CVE-2021-46973)

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。

An update of the linux package has been released.

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: net: qrtr: Avoid potential use after     free in MHI send It is possible that the MHI ul_callback will be invoked immediately following the     queueing of the skb for transmission, leading to the callback decrementing the refcount of the associated     sk and freeing the skb. As such the dereference of skb and the increment of the sk refcount must happen     before the skb is queued, to avoid the skb to be used after free and potentially the sk to drop its last     refcount.. (CVE-2021-46973)

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

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
229784	Linux Distros 未修補弱點：CVE-2021-46973	Nessus	Misc.	2025/3/5	2025/9/4	high
229784	Linux Distros 未修补的漏洞: CVE-2021-46973	Nessus	Misc.	2025/3/5	2025/9/4	high
229784	Linux Distros のパッチ未適用の脆弱性: CVE-2021-46973	Nessus	Misc.	2025/3/5	2025/9/4	high
203374	Photon OS 4.0: Linux PHSA-2021-4.0-0031	Nessus	PhotonOS Local Security Checks	2024/7/23	2026/1/7	high
229784	Linux Distros Unpatched Vulnerability : CVE-2021-46973	Nessus	Misc.	2025/3/5	2025/9/4	high

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