DEBIAN-CVE-2025-62491
- Source
- https://security-tracker.debian.org/tracker/CVE-2025-62491
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-62491.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-62491
- Upstream
- Published
- 2025-10-16T16:15:39Z
- Modified
- 2026-09-01T20:05:55Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
A Use-After-Free (UAF) vulnerability exists in the QuickJS engine's standard library when iterating over the global list of unhandled rejected promises (ts->rejected_promise_list). * The function js_std_promise_rejection_check attempts to iterate over the rejected_promise_list to report unhandled rejections using a standard list loop. * The reason for a promise rejection is processed inside the loop, including calling js_std_dump_error1(ctx, rp->reason). * If the promise rejection reason is an Error object that defines a custom property getter (e.g., via Object.defineProperty), this getter is executed during the error dumping process. * The malicious custom getter can execute JavaScript code that calls catch() on the same rejected promise being processed. * Calling catch() internally triggers js_std_promise_rejection_tracker, which then removes and frees the current promise entry (JSRejectedPromiseEntry) from the rejected_promise_list. * Since the list iteration continues using the now-freed memory pointer (el), the subsequent loop access results in a Use-After-Free condition.
- References
Affected packages
Debian:13 / quickjs
Package
- Name
- quickjs
- Purl
- pkg:deb/debian/quickjs?arch=source&distro=trixie
Debian:14 / quickjs
Package
- Name
- quickjs
- Purl
- pkg:deb/debian/quickjs?arch=source&distro=forky