Skip to content
OpenAdvisories
Medium · 5.8 CVE-2026-46690 EUVD-2026-36469GHSA-6m57-8r3p-pqx6

unbounded-spsc: Sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race

Published Jun 12, 2026 · Updated Jun 12, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
spearman unbounded-spsc <= 0.2.0 —

Affected packages

EcosystemPackageAffectedFixedRecord
crates.io unbounded-spsc <= 0.2.0 — GHSA-6m57-8r3p-pqx6

References