Important: libheif

Issue Overview: libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap-buffer-overflow write vulnerability in the grid tile compositing, allowing an attacker to write 64 bytes of fully attacker-controlled data past the end of a chroma plane heap...

UBUNTU-CVE-2026-32882

libheif is a HEIF and AVIF file format decoder and encoder. Versions 1.21.2 and prior contain a heap buffer over-read in HeifPixelImage::overlay in libheif/pixelimage.cc. When compositing an overlay image iovl whose child image has a different bit depth for the alpha channel than for the color...

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...