UBUNTU-CVE-2026-120439

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    UBUNTU-CVE-2026-120439

    Published: 2 Nov 2026Last Modified: 5 Nov 2026
    Upstream:
    CVE-2026-120439

    Summary:

    Details: QuickJS-NG before 0.16.0 contains an integer overflow in js_typed_array_sort() in quickjs.c that allows attackers to cause a heap buffer overflow on 32-bit hosts. Attackers who can run JavaScript can call TypedArray.prototype.sort with a comparator on a typed array near 2^30 elements, wrapping the allocation size and writing indices past the buffer to crash or potentially execute code.

    References: https://ubuntu.com/security/CVE-2026-120439, https://www.cve.org/CVERecord?id=CVE-2026-120439, https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032, https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568, https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0, https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6, https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort

    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-2026-120439 | CVE-DB