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    CVE-2026-109090

    A malicious X server could cause a heap overflow by injecting a large DEVICE_ENABLE reply when processed by libXi before 1.8.4.

    Published:Oct 27, 2026
    Last Modified:Oct 27, 2026
    EPS:Oct 27, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    X.org
    Product
    Libxi

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-122 Heap-based Buffer Overflow

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

    CVE-2026-109089 (CVSS 7.5) — A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a …
    CVE-2026-94281 (CVSS 6.5) — An out-of-bounds read in libXi's XListInputDevices() class parsing in libXi before 1.8.4 could be used by mali…
    CVE-2026-93545 (CVSS 6.5) — An out-of-bounds read in libXi's XListInputDevices() in libXi before 1.8.4 could be used by malicious X server…
    CVE-2026-93544 (CVSS 6.5) — An out-of-bounds read in libXi's XI2 XIQueryDevice reply parsing in libXi before 1.8.4 can be used by a malici…
    CVE-2026-93543 (CVSS 7.4) — An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers t…
    CVE-2026-93542 (CVSS 6.5) — An out-of-bounds read in libXi's XI2 class parsing via size_classes() and copy_classes() in libXi before 1.8.4…
    CVE-2026-93541 (CVSS 6.5) — An out-of-bounds read in libXi's XQueryDeviceState() in libXi before 1.8.4 could be used by a…
    CVE-2026-94282 (CVSS 5.6) — An out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion in libXi before 1.8.4 could be used b…
    CVE-2016-7945 (CVSS 7.5) — Multiple integer overflows in X.org libXi before 1.7.7 allow remote X servers to cause a denial of service (ou…
    CVE-2016-7946 (CVSS 7.5) — X.org libXi before 1.7.7 allows remote X servers to cause a denial of service (infinite loop) via vectors invo…

    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