CVE-2026-65705 FFmpeg 3.4 - 8.1.2 vf_floodfill Out-of-Bounds Write via filter_frame()

FFmpeg versions 3.4 through 8.1.2 contain an out-of-bounds write vulnerability in the vffloodfill video filter that allows attackers to corrupt heap memory by supplying a dynamically sized video stream with filtergraph reinitialization disabled via -reinitfilter 0. When configinput allocates the...