CVE-2026-125230: FFmpeg through 9.0.2 Integer Overflow Division by Zero via pcm_rechunk Filter

FFmpeg through 9.0.2 contains an integer overflow vulnerability in the pcmrechunk bitstream filter that allows attackers to trigger division by zero via a crafted channel count. Attackers can supply a file declaring a huge channel count that is remuxed into MXF, GXF or DAUD, overflowing samplesize and crashing the application.