track_header in libavformat/vividas.c in FFmpeg 4.3.1 has an out-of-bounds write because of incorrect extradata packing.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-091345 advisory.

    track_header in libavformat/vividas.c in FFmpeg 4.3.1 has an out-of-bounds write because of incorrect     extradata packing.

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.

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - track_header in libavformat/vividas.c in FFmpeg 4.3.1 has an out-of-bounds write because of incorrect
    extradata packing. (CVE-2020-35964)

  - decode_frame in libavcodec/exr.c in FFmpeg 4.3.1 has an out-of-bounds write because of errors in
    calculations of when to perform memset zero operations. (CVE-2020-35965)

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

  - adts_decode_extradata in libavformat/adtsenc.c in FFmpeg 4.4 does not check the init_get_bits return
    value, which is a necessary step because the second argument to init_get_bits can be crafted.
    (CVE-2021-38171)

  - FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aacpsy.c, which allows a remote malicious
    user to cause a Denial of Service. (CVE-2020-20446)

  - FFmpeg 4.2 is affected by null pointer dereference passed as argument to libavformat/aviobuf.c, which
    could cause a Denial of Service. (CVE-2020-20450)

  - FFmpeg 4.2 is affected by a Divide By Zero issue via libavcodec/aaccoder, which allows a remote malicious
    user to cause a Denial of Service (CVE-2020-20453)

  - Buffer Overflow vulnerability in FFmpeg 4.2 in mov_write_video_tag due to the out of bounds in
    libavformat/movenc.c, which could let a remote malicious user obtain sensitive information, cause a Denial
    of Service, or execute arbitrary code. (CVE-2020-22015)

The remote host is affected by the vulnerability described in GLSA-202105-24 (FFmpeg: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in FFmpeg. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could entice a user to open a specially crafted media       file using FFmpeg, possibly resulting in execution of arbitrary code with       the privileges of the process or a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Type	Severity
336778	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: ffmpeg (UTSA-2026-091345)	Nessus	Unity Linux Local Security Checks	Local	medium
426726	Alpine: ffmpeg4: security update to 4.3.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
426726	Alpine: ffmpeg4: security update to 4.3.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
404325	Alpine: multiple ffmpeg packages: security update to 4.3.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	critical
404325	Alpine: multiple ffmpeg packages: security update to 4.3.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	critical
404324	Alpine: multiple ffmpeg packages: security update to 4.3.2-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	high
404324	Alpine: multiple ffmpeg packages: security update to 4.3.2-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	high
156993	GLSA-202105-24 : FFmpeg: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high

Detections

Analytics

CVE-2020-35964

medium

Tenable Plugins

medium

high

high

critical

critical

high

high

high