UBUNTU-CVE-2026-102557

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    UBUNTU-CVE-2026-102557

    Published: 29 Sept 2026Last Modified: 4 Nov 2026
    Upstream:
    CVE-2026-102557
    Aliases:
    USN-8975-1

    Summary:

    Details: A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that caused size truncation while the implementation still used the full length, leading to heap corruption or a crash.

    References: https://ubuntu.com/security/CVE-2026-102557, https://www.cve.org/CVERecord?id=CVE-2026-102557, https://bugzilla.redhat.com/show_bug.cgi?id=2543231, https://gitlab.gnome.org/GNOME/libsoup/-/work_items/554, https://access.redhat.com/security/cve/CVE-2026-102557, https://ubuntu.com/security/notices/USN-8975-1

    Affected packages

    Package

    Name: libsoup2.4

    Purl: pkg:deb/ubuntu/libsoup2.4?arch=source&distro=esm-infra-legacy%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.52.2-1ubuntu0.3+esm9

    Affected versions

    2.50.0-2debian1

    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-2026-102557 | CVE-DB