CVE-2025-68431

libheif is an HEIF and AVIF file format decoder and encoder. Prior to version 1.21.0, a crafted HEIF that exercises the overlay image item path triggers a heap buffer over-read in HeifPixelImage::overlay. The function computes a negative row length likely from an unclipped overlay rectangle or...

CVE-2025-68431

CVE-2025-68431 affects libheif prior to version 1.21.0, where a crafted HEIF exploiting the overlay image item path triggers a heap buffer over-read in HeifPixelImage::overlay() . The root cause is a negative row length (likely from an unclipped overlay rectangle or invalid offsets) that underflo...