---
id: CVE-2026-71226
title: >-
  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.
summary: >-
  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.
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H'
cwe:
  - CWE-416
vendor: redhat
product: hardened_images
affected:
  - hardened_images
  - openshift_container_platform = 4.0
  - 'libkcapi >= 0.12.0, < 1.5.1'
  - enterprise_linux = 8.0
  - enterprise_linux = 9.0
  - enterprise_linux = 10.0
patched:
  - libkcapi 1.5.1
published: '2026-08-05'
updated: '2026-09-21'
sourceUpdated: '2026-09-21T13:17:10.013'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71226'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:56985'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:67265'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:67266'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:67267'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:69285'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-71226'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2462114'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71226.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-71226'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-71226'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-05T13:35:50.105591Z'
epss: 0.00181
epssPercentile: 0.06864
ingestedAt: '2026-08-10T09:39:29.659Z'
---

## Overview

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.

## Affected

- `hardened_images`
- `openshift_container_platform = 4.0`
- `libkcapi >= 0.12.0, < 1.5.1`
- `enterprise_linux = 8.0`
- `enterprise_linux = 9.0`
- `enterprise_linux = 10.0`

## Remediation

Upgrade past the affected range:

- `libkcapi 1.5.1`

## Vendor advisories

- **RHSA-2026:67267** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:67267)
- **RHSA-2026:67266** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 8) · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:67266)
- **RHSA-2026:67265** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-09-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:67265)
- **RHSA-2026:56985** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-08-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:56985)
- **Red Hat VEX** · Moderate · affected: Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat OpenShift Container Platform 4 · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-71226.json)
- **RHSA-2026:69285** · Red Hat · fixed in: Red Hat Enterprise Linux BaseOS EUS (v. 10.0) · released 2026-09-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:69285)