{"id":"UBUNTU-CVE-2026-120439","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.","modified":"2026-11-04T03:30:39.662724251Z","published":"2026-11-03T00:00:00Z","upstream":["CVE-2026-120439"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-120439"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-120439"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/blob/v0.15.1/quickjs.c#L60032"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/commit/e93cca611908e12b824ec85fbee6b31a5ee61568"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/releases/tag/v0.16.0"},{"type":"REPORT","url":"https://github.com/quickjs-ng/quickjs/security/advisories/GHSA-9wv5-5cgr-grj6"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/quickjs-ng-before-0.16.0-heap-buffer-overflow-via-typedarray-prototype-sort"}],"affected":[{"package":{"name":"quickjs-ng","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/quickjs-ng?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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_version":"0.16.2-2","binary_name":"qjs-src"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-120439.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}