Bug 2568141 - CVE-2026-120440 quickjs-ng: quickjs-ng: Denial of Service via memory leak in atomic store operations [fedora-all]
Summary: CVE-2026-120440 quickjs-ng: quickjs-ng: Denial of Service via memory leak in ...
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: quickjs-ng
Version: rawhide
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: ---
Assignee: Artur Frenszek-Iwicki
QA Contact:
URL:
Whiteboard: {"flaws": ["0fb50b92-2d3c-4a38-997c-4...
Depends On:
Blocks: CVE-2026-120440
TreeView+ depends on / blocked
 
Reported: 2026-11-06 14:14 UTC by Ganesh
Modified: 2026-11-06 14:48 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2026-11-06 14:48:07 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)

Description Ganesh 2026-11-06 14:14:19 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.

Comment 1 Artur Frenszek-Iwicki 2026-11-06 14:48:07 UTC
> QuickJS-NG before 0.16.0
The version currently in Fedora Rawhide is quickjs-ng-0.18.0-1.fc46.
The version currently in Fedora 45 is quickjs-ng-0.17.0-1.fc45, with quickjs-ng-0.18.0-1.fc45 being in testing.


Note You need to log in before you can comment on or make changes to this bug.