CVE-2026-71227

CVE Details

Release Date:	2026-08-05
Impact:	Moderate	What is this?

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.

See more information about CVE-2026-71227 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.1
Vector String:	CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	High
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (libkcapi)	ELSA-2026-67267-0	2026-09-15
Oracle Linux version 8 (libkcapi)	ELSA-2026-67266-0	2026-09-14
Oracle Linux version 9 (libkcapi)	ELSA-2026-67265-0	2026-09-14