{"id":"DEBIAN-CVE-2025-55131","details":"A flaw in Node.js's buffer allocation logic can expose uninitialized memory when allocations are interrupted, when using the `vm` module with the timeout option. Under specific timing conditions, buffers allocated with `Buffer.alloc` and other `TypedArray` instances like `Uint8Array` may contain leftover data from previous operations, allowing in-process secrets like tokens or passwords to leak or causing data corruption. While exploitation typically requires precise timing or in-process code execution, it can become remotely exploitable when untrusted input influences workload and timeouts, leading to potential confidentiality and integrity impact.","modified":"2026-08-27T23:05:34.187825709Z","published":"2026-01-20T21:16:03.320Z","upstream":["CVE-2025-55131"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2025-55131"}],"affected":[{"package":{"name":"nodejs","ecosystem":"Debian:12","purl":"pkg:deb/debian/nodejs?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18.20.4+dfsg-1~deb12u2"}]}],"versions":["18.13.0+dfsg1-1","18.13.0+dfsg1-1.1","18.19.0+dfsg-1","18.19.0+dfsg-2","18.19.0+dfsg-3","18.19.0+dfsg-4","18.19.0+dfsg-5","18.19.0+dfsg-6","18.19.0+dfsg-6~deb12u1","18.19.0+dfsg-6~deb12u2","18.19.1+dfsg-1","18.19.1+dfsg-2","18.19.1+dfsg-3","18.19.1+dfsg-3.1","18.19.1+dfsg-4","18.19.1+dfsg-6","18.20.1+dfsg-1","18.20.1+dfsg-2","18.20.1+dfsg-3","18.20.1+dfsg-4","18.20.4+dfsg-1~deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55131.json"}},{"package":{"name":"nodejs","ecosystem":"Debian:13","purl":"pkg:deb/debian/nodejs?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.19.2+dfsg-1+deb13u1"}]}],"versions":["20.19.2+dfsg-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55131.json"}},{"package":{"name":"nodejs","ecosystem":"Debian:14","purl":"pkg:deb/debian/nodejs?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"22.22.0+dfsg+~cs22.19.6-1"}]}],"versions":["20.19.2+dfsg-1","20.19.4+dfsg-1","20.19.5+dfsg+~cs20.19.12-1","20.19.5+dfsg+~cs20.19.12-2","20.19.5+dfsg+~cs20.19.12-3","20.19.5+dfsg+~cs20.19.12-4","20.19.5+dfsg+~cs20.19.24-1","22.12.0+dfsg-1","22.12.0+dfsg-2","22.12.0+dfsg-3","22.14.0+dfsg-1","22.18.0+dfsg+~cs22.17.2-1","22.18.0+dfsg+~cs22.17.2-2","22.18.0+dfsg-1","22.19.0+dfsg+~cs22.18.0-1","22.21.1+dfsg+~cs22.19.0-1","22.21.1+dfsg+~cs22.19.0-2","22.21.1+dfsg+~cs22.19.0-3","22.21.1+dfsg+~cs22.19.0-4","22.21.1+dfsg+~cs22.19.0-5","22.21.1+dfsg+~cs22.19.0-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-55131.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L"}]}