CVE-2026-38347

ffmpeg: A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 a...

CVE-2026-38347 is fixed in 38 products on 1 platform, first by DEBIAN-CVE-2026-38347, released September 1, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0046
39th percentile

A heap overflow in the ff_sws_alphablendaway function (libswscale/alphablend.c) of FFmpeg git-master commit 722a217 allows attackers to cause a Denial of Service (DoS) via a crafted input.

Where it's fixed

ProductFixed inFixReleased
Linux
ffmpeg · Debian 13.5 (trixie) 7:7.1.5-0+deb13u1 DEBIAN-CVE-2026-38347 Sep 1, 2026
ffmpeg · Debian 14 7:8.0.1-2 DEBIAN-CVE-2026-38347 Sep 1, 2026
ffmpeg · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 ffmpeg 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
ffmpeg · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 ffmpeg 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
ffmpeg · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 ffmpeg 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
ffmpeg · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 ffmpeg 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavcodec-extra · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavcodec-extra 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavcodec-extra · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavcodec-extra 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavcodec-extra · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavcodec-extra 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavcodec-extra · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavcodec-extra 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavcodec-extra57 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavcodec-extra57 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavcodec-extra58 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavcodec-extra58 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavcodec-extra58 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavcodec-extra58 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavcodec-extra60 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavcodec-extra60 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavcodec57 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavcodec57 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavcodec58 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavcodec58 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavcodec58 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavcodec58 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavcodec60 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavcodec60 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavdevice57 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavdevice57 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavdevice58 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavdevice58 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavdevice58 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavdevice58 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavdevice60 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavdevice60 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavfilter-extra · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavfilter-extra 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavfilter-extra · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavfilter-extra 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavfilter-extra · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavfilter-extra 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavfilter-extra · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavfilter-extra 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavfilter-extra6 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavfilter-extra6 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavfilter-extra7 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavfilter-extra7 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavfilter-extra7 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavfilter-extra7 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavfilter-extra9 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavfilter-extra9 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavfilter6 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavfilter6 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavfilter7 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavfilter7 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavfilter7 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavfilter7 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavfilter9 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavfilter9 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavformat-extra · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavformat-extra 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavformat-extra · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavformat-extra 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavformat-extra58 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavformat-extra58 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavformat-extra60 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavformat-extra60 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavformat57 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavformat57 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavformat58 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavformat58 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavformat58 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavformat58 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavformat60 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavformat60 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libavresample3 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavresample3 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavresample4 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavresample4 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavutil55 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libavutil55 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libavutil56 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libavutil56 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libavutil56 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libavutil56 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libavutil58 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libavutil58 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libpostproc54 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libpostproc54 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libpostproc55 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libpostproc55 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libpostproc55 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libpostproc55 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libpostproc57 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libpostproc57 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libswresample2 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libswresample2 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libswresample3 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libswresample3 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libswresample3 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libswresample3 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libswresample4 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libswresample4 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026
libswscale4 · Ubuntu 18.04.6 LTS (bionic) 7:3.4.11-0ubuntu0.1+esm16 libswscale4 7:3.4.11-0ubuntu0.1+esm16 Sep 8, 2026
libswscale5 · Ubuntu 20.04 LTS (focal) 7:4.2.7-0ubuntu0.1+esm18 libswscale5 7:4.2.7-0ubuntu0.1+esm18 Sep 8, 2026
libswscale5 · Ubuntu 22.04.1 LTS (jammy) 7:4.4.2-0ubuntu0.22.04.1+esm17 libswscale5 7:4.4.2-0ubuntu0.22.04.1+esm17 Sep 8, 2026
libswscale7 · Ubuntu 24.04.5 LTS (noble) 7:6.1.1-3ubuntu5+esm15 libswscale7 7:6.1.1-3ubuntu5+esm15 Sep 8, 2026

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