CVE-2026-71227

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

Published: Aug 5, 2026Updated: Sep 21, 2026 Sources: CVE List NVDCWE-835

5.1MEDIUM

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:LAttack Vector

Local

AC:HAttack Complexity

High

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:NIntegrity

None

A:HAvailability

High

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Weaknesses

CWE-835

Affected Products

Red Hat

commercial·USaka redhat

hardened imagesOn-prem

Operating Systems / linux-distro

openshift container platformOn-prem

Operating Systems / linux-distro

Red Hat Enterprise Linux 10On-premOS

Operating Systems / linux-distro

Red Hat Enterprise Linux 10.0 Extended Update SupportOn-premOS

Operating Systems / linux-distro

Red Hat Hardened ImagesOn-premOS

Operating Systems / linux-distro

Red Hat OpenShift Container Platform 4SaaSSaaS Service

Cloud & SaaS / container-orchestration

smuellerdd

oss-project

libkcapi

OSS Libraries / generic-library

Stephan Muelle

libkcapi

and 3 more affected products View all →

Exploitability

Official Patch Available

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Impact

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References

https://access.redhat.com/errata/RHSA-2026:56985

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:67265

access.redhat.com

https://access.redhat.com/errata/RHSA-2026:67266

access.redhat.com

and 4 more references View all →

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