Vulnerability in Smuellerdd Libkcapi
CVE-2026-71227
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.
EPSS: 0.002 (6.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Smuellerdd Libkcapi
- Stephan Muelle Libkcapi — versions 0.12.0
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat Openshift Container Platform 4
- Redhat Enterprise_linux — versions 8.0, 9.0, 10.0
- Redhat Hardened_images
- Redhat Openshift_container_platform — versions 4.0
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking, Exploit, Issue Tracking, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory)
Frequently asked questions
- What is CVE-2026-71227?
- CVE-2026-71227 is a medium-severity vulnerability in Smuellerdd Libkcapi, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.1/10. Published 2026-08-05.
- How severe is CVE-2026-71227?
- Medium severity. CVSS v3 base score is 5.1 out of 10.