CVE-2026-71227 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-71227MEDIUM

Stephan Muelle libkcapi — Libkcapi: infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled io_getevents() timeout return

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   H   N   N  U  N  N  H    5.1   .0011    1.6     —

AFFECTED
  Product                                 Versions     Fixed
  libkcapi                                0.12.0 –     —
  Red Hat Enterprise Linux 10             unspecified  —
  Red Hat Enterprise Linux 8              unspecified  —
  Red Hat Enterprise Linux 9              unspecified  —
  Red Hat Hardened Images                 unspecified  —
  Red Hat OpenShift Container Platform 4  unspecified  —

TIMELINE
  Aug 5   EXPLOIT PUBLISHED — CVE-2026-71227 (Stephan Muelle libkcapi). Public exploit reference added.
  Aug 5   Reserved by redhat
  Aug 5   Published (CNA: redhat)
  Aug 11  EXPLOIT PUBLISHED — CVE-2026-71227 (Stephan Muelle libkcapi). Public exploit reference added.

CWE-835 · CNA: redhat · CVSS v3.1 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 4 events, chronological
Date	Event	Detail
August 5, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-71227 (Stephan Muelle libkcapi). Public exploit reference added.
August 5, 2026	Reserved	Reserved by redhat
August 5, 2026	Published	Published (CNA: redhat)
August 11, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-71227 (Stephan Muelle libkcapi). Public exploit reference added.

Affected

Affected products and packages — 6 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Stephan Muelle	libkcapi	—	0.12.0	—
Red Hat	Red Hat Enterprise Linux 10	—	—	—
Red Hat	Red Hat Enterprise Linux 8	—	—	—
Red Hat	Red Hat Enterprise Linux 9	—	—	—
Red Hat	Red Hat Hardened Images	—	—	—
Red Hat	Red Hat OpenShift Container Platform 4	—	—	—

Weaknesses

CWE-835

References (2)

https://access.redhat.com/security/cve/CVE-2026-71227 [Vendor Advisory]
https://bugzilla.redhat.com/show_bug.cgi?id=2462867 [Exploit, Issue Tracking, Vendor Advisory]

Authoritative record: CVE-2026-71227 at cve.org

Vendors: stephan muelle · red hat

Weaknesses: CWE-835

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-71227 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.