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： can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS. (CVE-2021-47232)

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： can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS. (CVE-2021-47232)

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： can: j1939: fix Use-after-Free, hold skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free if the skb is taken concurrently from the session queue due to a CTS. (CVE-2021-47232)

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: can: j1939: fix Use-after-Free, hold     skb ref while in use This patch fixes a Use-after-Free found by the syzbot. The problem is that a skb is     taken from the per-session skb queue, without incrementing the ref count. This leads to a Use-after-Free     if the skb is taken concurrently from the session queue due to a CTS. (CVE-2021-47232)

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-2025-989803 advisory.

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

    can: j1939: fix Use-after-Free, hold skb ref while in use

    This patch fixes a Use-after-Free found by the syzbot.

    The problem is that a skb is taken from the per-session skb queue,     without incrementing the ref count. This leads to a Use-after-Free if     the skb is taken concurrently from the session queue due to a CTS.

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.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-986970 advisory.

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

    can: j1939: fix Use-after-Free, hold skb ref while in use

    This patch fixes a Use-after-Free found by the syzbot.

    The problem is that a skb is taken from the per-session skb queue,     without incrementing the ref count. This leads to a Use-after-Free if     the skb is taken concurrently from the session queue due to a CTS.

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.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-005004 advisory.

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

    can: j1939: fix Use-after-Free, hold skb ref while in use

    This patch fixes a Use-after-Free found by the syzbot.

    The problem is that a skb is taken from the per-session skb queue,     without incrementing the ref count. This leads to a Use-after-Free if     the skb is taken concurrently from the session queue due to a CTS.

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
229851	Linux Distros 未修補弱點：CVE-2021-47232	Nessus	Misc.	2025/3/5	2025/10/28	high
229851	Linux Distros 未修补的漏洞: CVE-2021-47232	Nessus	Misc.	2025/3/5	2025/10/28	high
229851	Linux Distros のパッチ未適用の脆弱性: CVE-2021-47232	Nessus	Misc.	2025/3/5	2025/10/28	high
229851	Linux Distros Unpatched Vulnerability : CVE-2021-47232	Nessus	Misc.	2025/3/5	2025/10/28	high
273111	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-989803)	Nessus	Unity Linux Local Security Checks	2025/11/5	2025/11/5	high
239155	TencentOS Server 3: kernel (TSSA-2024:1028)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	high
268805	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986970)	Nessus	Unity Linux Local Security Checks	2025/10/7	2025/10/15	high
296731	Unity Linux 20.1050e Security Update: kernel (UTSA-2026-005004)	Nessus	Unity Linux Local Security Checks	2026/1/27	2026/1/27	high
239541	TencentOS Server 2: kernel (TSSA-2024:1029)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	high

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