UBUNTU-CVE-2026-54059

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    UBUNTU-CVE-2026-54059

    Published: 6 Jul 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-54059
    Aliases:
    USN-8999-1

    Summary:

    Details: Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.

    References: https://ubuntu.com/security/CVE-2026-54059, https://www.cve.org/CVERecord?id=CVE-2026-54059, https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x, https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst, https://ubuntu.com/security/notices/USN-8999-1

    Affected packages

    Package

    Name: pillow

    Purl: pkg:deb/ubuntu/pillow?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.2.1-1ubuntu2
    2.2.1-2ubuntu1
    2.2.1-3ubuntu2
    2.2.1-3ubuntu3
    2.2.1-3ubuntu4
    2.2.1-3ubuntu6

    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-2026-54059 | CVE-DB