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 out-of-range pixel indices causes heap out-of-bounds reads of up to 762 bytes past the colormap allocation. Both IMAGEINDEXED code paths are affected (bpp=1 and bpp=2). The leaked heap bytes are written into the output surface pixel data, making them potentially observable in the rendered image. This vulnerability is fixed with commit 996bf12888925932daace576e09c3053410896f8.
An exploitable code execution vulnerability exists in the XCF image rendering functionality of SDL2image-2.0.3. A specially crafted XCF image can cause a heap overflow, resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
An exploitable code execution vulnerability exists in the ILBM image rendering functionality of SDL2image-2.0.2. A specially crafted ILBM image can cause a heap overflow resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
An exploitable code execution vulnerability exists in the ILBM image rendering functionality of SDL2image-2.0.2. A specially crafted ILBM image can cause a stack overflow resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
An exploitable code execution vulnerability exists in the ICO image rendering functionality of SDL2image-2.0.2. A specially crafted ICO image can cause an integer overflow, cascading to a heap overflow resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
An exploitable code execution vulnerability exists in the XCF image rendering functionality of SDL2image-2.0.2. A specially crafted XCF image can cause a heap overflow resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
An exploitable code execution vulnerability exists in the BMP image rendering functionality of SDL2image-2.0.2. A specially crafted BMP image can cause a stack overflow resulting in code execution. An attacker can display a specially crafted image to trigger this vulnerability.
A double-Free vulnerability exists in the XCF image rendering functionality of SDL2image-2.0.2. A specially crafted XCF image can cause a Double-Free situation to occur. An attacker can display a specially crafted image to trigger this vulnerability.
A buffer overflow vulnerability exists in the GIF image parsing functionality of SDL2image-2.0.2. A specially crafted GIF image can lead to a buffer overflow on a global section. An attacker can display an image to trigger this vulnerability.