CVE-2026-71226

Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path

State: Published
Severity: 7.3 High
Published: Aug 5, 2026
Updated: Nov 2, 2026
Reserved: Aug 5, 2026

Description

Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.

Scores

CVSS	Score	Vector	Source
3.1	7.3 High	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H	redhat

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
libkcapiStephan Muelle	0.12.0 to before 1.5.1Affected
Red Hat Enterprise Linux 10Red Hat	0:1.5.1-1.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:1.5.0-6.el10_0 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:1.4.0-3.el8_10 and laterNot affected
Red Hat Enterprise Linux 8.8 Telecommunications Update ServiceRed Hat	0:1.2.0-3.el8_8.1 and laterNot affected
Red Hat Enterprise Linux 8.8 Update Services for SAP SolutionsRed Hat	0:1.2.0-3.el8_8.1 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:1.4.0-3.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:1.4.0-2.el9_6.1 and laterNot affected
Red Hat Hardened ImagesRed Hat	1.5.1-0.1.hum1 and laterNot affected
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 5Red Hat

References

RHSA-2026:56985vendor-advisory
RHSA-2026:67265vendor-advisory
RHSA-2026:67266vendor-advisory
RHSA-2026:67267vendor-advisory
RHSA-2026:69285vendor-advisory
RHSA-2026:87712vendor-advisory
RHSA-2026:93453vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-71226vdb-entry
RHBZ#2462114issue-tracking

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.