Process crash via mixed tensor type mismatch
Published Jan 28, 2026 · Updated Jan 28, 2026
Type validation failure in OneFlow 0.9.0 flow.dstack allows remote attackers to crash a process by supplying mixed tensor types. flow.dstack accepts a sequence combining a OneFlow tensor with a NumPy array and proceeds into native execution instead of rejecting the type mismatch, causing a segmentation fault and core dump. Exploitation requires an application to pass attacker-controlled mixed tensor inputs to the API, and the demonstrated consequence is a process crash.
Summary
What happened
Type validation failure in OneFlow 0.9.0 flow.dstack allows remote attackers to crash a process by supplying mixed tensor types. flow.dstack accepts a sequence combining a OneFlow tensor with a NumPy array and proceeds into native execution instead of rejecting the type mismatch, causing a segmentation fault and core dump. Exploitation requires an application to pass attacker-controlled mixed tensor inputs to the API, and the demonstrated consequence is a process crash.
The record
- CVE
- CVE-2025-65889
- Published
- Jan 28, 2026
- Updated
- Jan 28, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 28, 2026CVE publishedPublication date reported by the CVE source.
- Jan 28, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Mixed-type flow.dstack crash reproducerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo