CVE-2026-71227CWE-835

CVE-2026-71227

Medium · published August 5, 2026

CVSS v3.1
5.1
EPSS
0%
Percentile
5.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00165 · 5.4th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-08-05T17:24Z
Affected products (6)
ProductVersionsFixed in
redhat/hardened_imagesall versions—
redhat/openshift_container_platformall versions—
smuellerdd/libkcapi≥ 0.12.0, < 1.5.11.5.1
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
redhat/enterprise_linuxall versions—
References (8)
https://access.redhat.com/errata/RHSA-2026:56985 · [email protected]https://access.redhat.com/errata/RHSA-2026:67265 · [email protected]https://access.redhat.com/errata/RHSA-2026:67266 · [email protected]https://access.redhat.com/errata/RHSA-2026:67267 · [email protected]https://access.redhat.com/errata/RHSA-2026:69285 · [email protected]https://access.redhat.com/errata/RHSA-2026:87712 · [email protected]https://access.redhat.com/security/cve/CVE-2026-71227 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2462867 · [email protected]
EPSS history
Timeline
  • 05 AUG 12:42Z
    Libkcapi: infinite loop denial of service in libkcapi _kcapi_aio_read_all() due to unhandled io_getevents() timeout return
    cvelistv5