UBUNTU-CVE-2025-68431

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    UBUNTU-CVE-2025-68431

    Published: 29 Dec 2025Last Modified: 20 May 2026
    Upstream:
    CVE-2025-68431
    Aliases:
    USN-7952-1

    Summary:

    Details: 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.

    References: https://ubuntu.com/security/CVE-2025-68431, https://www.cve.org/CVERecord?id=CVE-2025-68431, https://github.com/strukturag/libheif/security/advisories/GHSA-j87x-4gmq-cqfq, https://github.com/strukturag/libheif/releases/tag/v1.21.0, https://ubuntu.com/security/notices/USN-7952-1

    Affected packages

    Package

    Name: libheif

    Purl: pkg:deb/ubuntu/libheif?arch=source&distro=esm-apps%2Fbionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.1.0-2ubuntu0.1~esm2

    Affected versions

    1.1.0-2
    1.1.0-2ubuntu0.1~esm1

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2025-68431 | CVE-DB