# CVE-2026-71227

## Summary

- **CVE ID:** CVE-2026-71227
- **Severity:** MEDIUM
- **CVSS Score:** 5.1 (CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
- **CWE:** CWE-835
- **Published:** Aug 5, 2026
- **Last Modified:** Sep 14, 2026

## Description

A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the _kcapi_aio_read_all() function can enter a non-terminating wait loop. This can lead to a persistent denial of service, making the affected application or thread unresponsive.

## Affected Products

- Stephan Muelle — libkcapi (0.12.0)
- Red Hat — Red Hat Hardened Images (1.5.1-0.1.hum1)
- Red Hat — Red Hat Enterprise Linux 8 (0:1.4.0-3.el8_10)
- Red Hat — Red Hat Enterprise Linux 10 (0:1.5.1-1.el10_2)
- Red Hat — Red Hat Enterprise Linux 9 (0:1.4.0-3.el9_8)

## References

- [CNA](https://access.redhat.com/security/cve/CVE-2026-71227)
- [CNA](https://bugzilla.redhat.com/show_bug.cgi?id=2462867)
- [CNA](https://access.redhat.com/errata/RHSA-2026:56985)
- [CNA](https://access.redhat.com/errata/RHSA-2026:67266)
- [CNA](https://access.redhat.com/errata/RHSA-2026:67265)
- [CNA](https://access.redhat.com/errata/RHSA-2026:67267)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.17%
- **EPSS Percentile:** 6.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._