JLSEC-2026-156

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...

Medium: libheif

Issue Overview: 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...

EUVD-2025-205646

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 libheif has Potential Heap Buffer Over-Read

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...