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Ubuntu 26.04 LTS FFmpeg Critical Denial of Service Issues USN-8469

Linuxsecurity •LinuxSecurity Advisories • June 24, 2026

Several security issues were fixed in FFmpeg. Software Description: - ffmpeg: Tools for transcoding, streaming and playing of multimedia files Details: Jiasheng Jiang discovered that FFmpeg incorrectly handled memory in certain error-handling paths of its TensorFlow DNN backend. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2025-12343) Quang Luong discovered that FFmpeg incorrectly handled certain subsample data. An attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-40962)

Several security issues were fixed in FFmpeg.

Software Description:

- ffmpeg: Tools for transcoding, streaming and playing of multimedia files

Jiasheng Jiang discovered that FFmpeg incorrectly handled memory in

certain error-handling paths of its TensorFlow DNN backend. An attacker

could possibly use this issue to cause a denial of service. This issue only

affected Ubuntu 24.04 LTS. (CVE-2025-12343)

Quang Luong discovered that FFmpeg incorrectly handled certain subsample

data. An attacker could possibly use this issue to cause a denial of

service or possibly execute arbitrary code. (CVE-2026-40962)

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS ffmpeg 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavcodec-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavcodec-extra 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavcodec-extra62 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavcodec62 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavdevice-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavdevice62 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavfilter-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavfilter-extra 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavfilter-extra11 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavfilter11 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavformat-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavformat-extra 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavformat-extra62 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavformat62 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavutil-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libavutil60 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libswresample-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libswresample6 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libswscale-dev 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro libswscale9 7:8.0.1-3ubuntu2+esm1 Available with Ubuntu Pro Ubuntu 24.04 LTS ffmpeg 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavcodec-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavcodec-extra 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavcodec-extra60 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavcodec60 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavdevice-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavdevice60 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavfilter-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavfilter-extra 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavfilter-extra9 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavfilter9 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavformat-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavformat-extra 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavformat-extra60 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavformat60 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavutil-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libavutil58 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libpostproc-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libpostproc57 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libswresample-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libswresample4 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libswscale-dev 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro libswscale7 7:6.1.1-3ubuntu5+esm10 Available with Ubuntu Pro Ubuntu 22.04 LTS ffmpeg 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavcodec-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavcodec-extra 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavcodec-extra58 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavcodec58 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavdevice-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavdevice58 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavfilter-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavfilter-extra 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavfilter-extra7 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavfilter7 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavformat-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavformat-extra 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavformat-extra58 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavformat58 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavutil-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libavutil56 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libpostproc-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libpostproc55 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libswresample-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libswresample3 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libswscale-dev 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro libswscale5 7:4.4.2-0ubuntu0.22.04.1+esm12 Available with Ubuntu Pro Ubuntu 20.04 LTS ffmpeg 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavcodec-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavcodec-extra 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavcodec58 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavdevice-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavdevice58 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavfilter-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavfilter-extra 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavfilter7 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavformat-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavformat58 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavresample-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavresample4 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavutil-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libavutil56 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libpostproc-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libpostproc55 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libswresample-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libswresample3 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libswscale-dev 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro libswscale5 7:4.2.7-0ubuntu0.1+esm13 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

CVE-2025-12343, CVE-2026-40962

Ubuntu Security Notice USN-8469-1

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The full story

This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Critical FFmpeg Vulnerabilities Affect Ubuntu Users Two critical vulnerabilities were discovered in FFmpeg, affecting Ubuntu 24.04 LTS. The first vulnerability, CVE-2025-12343, allows denial of service due to improper memory handling in the TensorFlow DNN backend. The second vulnerability, CVE-2026-40962, could lead to denial of service or arbitrary code execution due to mishandling of subsample data. Both vulnerabilities were reported by Jiasheng Jiang and Quang Luong. Users of Ubuntu 24.04 LTS are particularly at risk, while Ubuntu 26.04 LTS is not affected. Patches are available through system updates. The vulnerabilities were published on February 18, 2026, and April 16, 2026, respectively. 2 sources 71

Extracted Entities

Ubuntu 26.04 LTS FFmpeg Critical Denial of Service Issues USN-8469

The full story

Extracted Entities

Attack Types (1)

Companies (1)

CVEs (2)

Platforms (1)