UBUNTU-CVE-2026-120438

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Source

https://ubuntu.com/security/CVE-2026-120438

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120438.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-120438

Upstream

CVE-2026-120438

Published

2026-11-03T00:00:00Z

Modified

2026-11-04T03:30:03Z

Severity

7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
8.5 (High) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Ubuntu - medium

Summary

[none]

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

Affected packages

Ubuntu:26.10 / quickjs-ng

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

0.*

0.15.0-1

0.15.1-1

0.16.2-2

Ecosystem specific

{
    "binaries": [
        {
            "binary_name": "libqjs0",
            "binary_version": "0.16.2-2"
        },
        {
            "binary_name": "qjs",
            "binary_version": "0.16.2-2"
        },
        {
            "binary_name": "qjs-src",
            "binary_version": "0.16.2-2"
        }
    ]
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120438.json"