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

  - 提交 9d786e4 之前的 FFmpeg 在 MPEG-PS 復用器 （libavformat/mpegenc.c） 中包含堆疊緩衝區溢位。當多用輸入的資料流多於復用器的固定大小堆疊緩衝區容納的資料流時，緩衝區會溢位。具有過多資料流的特製輸入會在 MPEG-PS 復用期間觸發溢位。（CVE-2026-75142）

請注意，Nessus 的判定取決於廠商所報告的套件是否存在。

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。

  - 提交 9d786e4 之前的 FFmpeg 在 MPEG-PS 多路复用器 （libavformat/mpegenc.c） 中包含堆栈缓冲区溢出。当对输入进行多路复用器固定大小的堆栈缓冲区容纳的流时，缓冲区会溢出。具有超量流的特制输入会在 MPEG-PS 多路复用期间触发溢出。（CVE-2026-75142）

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。

  - コミット 9d786e4 前の FFmpeg には、MPEG-PS muxer(libavformat/mpegenc.c)のスタックバッファオーバーフローが含まれています。マルチプレクサーの固定サイズのスタックバッファが収容できる以上のストリームで入力を多重化すると、バッファがオーバーフローします。過剰な数のストリームのある細工された入力により、MPEG-PS 多重化中にオーバーフローがトリガーされます。(CVE-2026-75142)

Nessus は、ベンダーから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 Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-104786 advisory.

    FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer     (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer     accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the     overflow during MPEG-PS muxing.

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

  - FFmpeg before commit 9d786e4 contains a stack buffer overflow in the MPEG-PS muxer     (libavformat/mpegenc.c). When muxing input with more streams than the muxer's fixed-size stack buffer     accommodates, the buffer is overflowed. A crafted input with an excessive number of streams triggers the     overflow during MPEG-PS muxing. (CVE-2026-75142)

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

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8716-1 advisory.

    It was discovered that FFmpeg incorrectly handled certain crafted media files in the VobSub subtitle     demuxer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-64830)

    It was discovered that FFmpeg incorrectly handled certain crafted DTS audio streams in the S/PDIF muxer.
    An attacker could possibly use this issue to cause a denial of service or expose sensitive information.
    (CVE-2026-64833)

    It was discovered that FFmpeg incorrectly handled certain crafted RTP/ASF streams. An attacker could     possibly use this issue to cause a denial of service. (CVE-2026-64834)

    It was discovered that FFmpeg incorrectly handled certain crafted ADX audio files. This issue only     affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-64835)

    It was discovered that FFmpeg incorrectly handled certain crafted AVI files in the TDSC video decoder. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-65703)

    It was discovered that FFmpeg incorrectly handled certain crafted ffconcat files processed via the TY     demuxer. This issue only affected Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS.
    (CVE-2026-65704)

    It was discovered that FFmpeg incorrectly handled certain crafted video streams in the vf_floodfill video     filter. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04     LTS. (CVE-2026-65705)

    It was discovered that FFmpeg incorrectly handled certain crafted NV12 video frames in the vf_swaprect     video filter. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu     24.04 LTS. (CVE-2026-65706)

    It was discovered that FFmpeg incorrectly handled certain crafted hvcC NAL arrays in the HEVC parser. An     attacker could possibly use this issue to cause a denial of service or execute arbitrary code.
    (CVE-2026-75141)

    It was discovered that FFmpeg incorrectly handled certain crafted MPEG system headers. An attacker could     possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2026-75142)

    It was discovered that FFmpeg incorrectly handled certain crafted network input in the librist protocol     handler. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2026-75143)

    It was discovered that FFmpeg incorrectly handled certain crafted Dirac data units in the VC2 HQ RTP     packetizer. An attacker could possibly use this issue to cause a denial of service or execute arbitrary     code. (CVE-2026-75144)

    It was discovered that FFmpeg incorrectly handled certain crafted DASH manifests. This issue only affected     Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, and Ubuntu 24.04 LTS. (CVE-2026-75146)

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	名称	产品	系列	发布时间	最近更新时间	严重程度
338201	Linux Distros 未修補弱點：CVE-2026-75142	Nessus	Misc.	2026/8/20	2026/9/10	high
338201	Linux Distros 未修补的漏洞：CVE-2026-75142	Nessus	Misc.	2026/8/20	2026/9/10	high
338201	Linux Distros のパッチ未適用の脆弱性: CVE-2026-75142	Nessus	Misc.	2026/8/20	2026/9/10	high
340886	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: ffmpeg (UTSA-2026-104786)	Nessus	Unity Linux Local Security Checks	2026/8/26	2026/8/26	high
338201	Linux Distros Unpatched Vulnerability : CVE-2026-75142	Nessus	Misc.	2026/8/20	2026/9/10	high
344622	Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS : FFmpeg vulnerabilities (USN-8716-1)	Nessus	Ubuntu Local Security Checks	2026/9/10	2026/9/10	critical

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