UBUNTU-CVE-2026-120438

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    UBUNTU-CVE-2026-120438

    Published: 2 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-120438

    Summary:

    Details: QuickJS-NG before 0.16.0 contains an integer overflow in js_proxy_get_own_property_names() in quickjs.c that causes a heap buffer overflow on 32-bit hosts. Attackers running JavaScript can return a large array-like object from a Proxy ownKeys trap to wrap the allocation size, causing crashes or potential code execution.

    References: https://ubuntu.com/security/CVE-2026-120438, https://www.cve.org/CVERecord?id=CVE-2026-120438, https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L51509, https://github.com/quickjs-ng/quickjs/commit/252209d99cf112568160548bdcaa98d95e0d0068, https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0, https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-jp52-chwg-2p9p, https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-proxy-ownkeys-enumeration

    Affected packages

    Package

    Name: quickjs-ng

    Purl: pkg:deb/ubuntu/quickjs-ng?arch=source&distro=stonking

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0.15.0-1
    0.15.1-1

    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-2026-120438 | CVE-DB