Bug 2565315 (CVE-2026-120440) - CVE-2026-120440 quickjs-ng: quickjs-ng: Denial of Service via memory leak in atomic store operations
Summary: CVE-2026-120440 quickjs-ng: quickjs-ng: Denial of Service via memory leak in ...
Keywords:
Status: NEW
Alias: CVE-2026-120440
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-11-02 17:42 UTC by OSIDB Bzimport
Modified: 2026-11-02 17:50 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-11-02 17:42:34 UTC 
QuickJS-NG before 0.16.0 contains a memory leak vulnerability in js_atomics_store() in quickjs.c that fails to free the converted value when returning a RangeError. Attackers running JavaScript can repeatedly call Atomics.store with a valueOf that detaches or shrinks the buffer to exhaust heap memory and cause denial of service.
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