CVE-2026-46690
unbounded-spsc: Sender::send pointer-as-value transmute causes OOB read and fake-Arc drop under TX/RX race
CVSS Score
5.8
EPSS Score
0.0%
EPSS Percentile
3th
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.
| CWE | CWE-125 CWE-415 CWE-704 CWE-787 |
| Vendor | spearman |
| Product | unbounded-spsc |
| Published | Jun 12, 2026 |
| Last Updated | Jun 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:H Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High
Affected Versions
spearman / unbounded-spsc
<= 0.2.0