CVE-2026-71226
Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path
At a glance
- Severity
- HIGH 7.3
- EPSS
- EPSS 0.14 % · percentile 3 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
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
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | redhat |
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 7.3 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2026-53375
- GCVE · GCVE-0-2026-71226
CERT-FR advisories
- CERTFR-2026-AVI-1336 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:redhat:hardened_images:-:*:*:*:*:*:*:*cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*cpe:2.3:a:smuellerdd:libkcapi:*:*:*:*:*:*:*:*≥ 0.12.0 < 1.5.1cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Stephan Muelle · libkcapi | affected 0.12.0 < 1.5.1 |
| Red Hat · Red Hat Enterprise Linux 10 | unaffected 0:1.5.1-1.el10_2 < * |
| Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support | unaffected 0:1.5.0-6.el10_0 < * |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 0:1.4.0-3.el8_10 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:1.4.0-3.el9_8 < * |
| Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support | unaffected 0:1.4.0-2.el9_6.1 < * |
| Red Hat · Red Hat Hardened Images | unaffected 1.5.1-0.1.hum1 < * |
| Red Hat · Red Hat OpenShift Container Platform 4 | |
| Red Hat · Red Hat OpenShift Container Platform 4 |
References
- https://access.redhat.com/errata/RHSA-2026:56985
- https://access.redhat.com/errata/RHSA-2026:67265
- https://access.redhat.com/errata/RHSA-2026:67266
- https://access.redhat.com/errata/RHSA-2026:67267
- https://access.redhat.com/errata/RHSA-2026:69285
- https://access.redhat.com/errata/RHSA-2026:87712
- https://access.redhat.com/security/cve/CVE-2026-71226
- https://bugzilla.redhat.com/show_bug.cgi?id=2462114
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |