CVE-2026-24783: Incorrect Calculation

soroban-fixed-point-math is a fixed-point math library for Soroban smart contacts. In versions 1.3.0 and 1.4.0, the mulDivx, y, z function incorrectly handled cases where both the intermediate product $x y$ and the divisor $z$ were negative. The logic assumed that if the intermediate product was...