CVE-2026-35444 SDL_image has a heap buffer overflow READ via unchecked colormap index in XCF loader

SDLimage is a library to load images of various formats as SDL surfaces. In dolayersurface in src/IMGxcf.c, pixel index values from decoded XCF tile data are used directly as colormap indices without validating them against the colormap size cmnum. A crafted .xcf file with a small colormap and...