CVEvulnerability

CVE-2025-68431

7.1 HIGH Published 2025-12-29 Modified 2026-10-07 Official page ↗
Status
Analyzed
Published
2025-12-29
Last modified
2026-10-07
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.1 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
Weaknesses
CWE-125, CWE-190

Description

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 invalid offsets), which then underflows when converted to `size_t` and is passed to `memcpy`, causing a very large read past the end of the source plane and a crash. Version 1.21.0 contains a patch. As a workaround, avoid decoding images using `iovl` overlay boxes.

Affected configurations

• struktur libheif (< 1.21.0)

Related

Weakness · CWE (2)

  • CWE-125 Out-of-bounds Read weakness
  • CWE-190 Integer Overflow or Wraparound weakness

References