---
title: "CVE-2026-97589: Linux Kernel s390/crypto - Logic Error"
description: "Linux kernel s390/crypto contains a logic error caused by incorrect return codes in asynchronous callbacks, letting the crypto engine trigger double completions, exploit requires specific crypto operations."
url: https://panop.io/threat-heartbeat/CVE-2026-97589/
---

# CVE-2026-97589 Linux Kernel s390/crypto - Logic Error

Linux kernel s390/crypto contains a logic error caused by incorrect return codes in asynchronous callbacks, letting the crypto engine trigger double completions, exploit requires specific crypto operations.

CVSS base score 7.0 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.14% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-97589)

## Details

Type

Logic Error

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

25 September 2026

Updated

15 October 2026

## Vendor fix

Update to the latest Linux kernel version containing the fix for s390/crypto asynchronous callback return codes.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-97589](https://nvd.nist.gov/vuln/detail/CVE-2026-97589)
- [https://git.kernel.org/stable/c/5480291aa848e19e61175abfd457933516db70c6](https://git.kernel.org/stable/c/5480291aa848e19e61175abfd457933516db70c6)
- [https://git.kernel.org/stable/c/972e0d9b7d1d112240ccde1f1be85bf9ffaa1720](https://git.kernel.org/stable/c/972e0d9b7d1d112240ccde1f1be85bf9ffaa1720)
- [https://git.kernel.org/stable/c/ac1481320110b803ab9b79ab4d2ca11a74fc05f2](https://git.kernel.org/stable/c/ac1481320110b803ab9b79ab4d2ca11a74fc05f2)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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