unbounded_spsc is an "unbounded" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches.
History

Fri, 12 Jun 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 12 Jun 2026 15:45:00 +0000

Type Values Removed Values Added
Description unbounded_spsc is an "unbounded" extension of bounded_spsc_queue. In versions 0.2.0 and prior, sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race. At time of publication, there are no publicly available patches.
Title unbounded-spsc: Sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race
Weaknesses CWE-125
CWE-415
CWE-704
CWE-787
References
Metrics cvssV3_1

{'score': 5.8, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-06-12T14:56:10.356Z

Reserved: 2026-05-15T21:46:51.548Z

Link: CVE-2026-46690

cve-icon Vulnrichment

Updated: 2026-06-12T15:53:25.480Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-12T16:16:29.197

Modified: 2026-06-12T16:24:31.187

Link: CVE-2026-46690

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.