Bump ffmpeg to 8.1.2 to fix CVE-2026-8461#1249
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ffmpeg 8.1.1 is affected by CVE-2026-8461, an out-of-bounds write in the MagicYUV decoder (libavcodec/magicyuv.c, CWE-787, CVSS 8.8). It is fixed upstream in ffmpeg 8.1.2. Update FFMPEG_VERSION from 8.1.1 to 8.1.2 in all seven build Dockerfiles (manylinux2014, manylinux_2_28 and musllinux_1_2).
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Resolves #1248.
Problem
ffmpeg
8.1.1is affected by CVE-2026-8461 - an out-of-bounds write in the MagicYUV decoder (libavcodec/magicyuv.c), CWE-787, CVSS 3.1 base score 8.8 (HIGH). It allows denial of service and potentially remote code execution when decoding a crafted MagicYUV stream. It is fixed upstream in ffmpeg8.1.2.Change
Bump
FFMPEG_VERSIONfrom8.1.1to8.1.2in all seven build Dockerfiles:One line per file, no other changes.
8.1.1appears nowhere else in the tree, so there are no checksums or pins left to update.Notes
ffmpeg-8.1.2.tar.gzis published on ffmpeg.org, so the existing download URLs in each Dockerfile resolve unchanged with no other edits.8.1.3is not released, making8.1.2the correct target.8.1.2is a patch release in the same8.1series as the currently pinned version, so no API or ABI change is expected for the OpenCV video I/O backend.8.1.1.