# CVE-2026-71226: Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path CVE-2026-71226 is fixed in 3 products on 1 platform, first by RHSA-2026:69285, released August 5, 2026. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2026-71226 - Priority: High - CVSS: 7.3 (Important) - EPSS: 0.0015 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Aug 5, 2026 - Weakness: Use After Free - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-71226 ## 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. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | libkcapi Debian 14 | 1.5.1-1 | [DEBIAN-CVE-2026-71226](https://patchblox.com/security/data/fix/linux/debian-cve-2026-71226.md) | Aug 5, 2026 | | Linux | libkcapi RHEL 10 | 1.5.0-6.el10_0 | [RHSA-2026:69285](https://patchblox.com/security/data/fix/linux/rhsa-2026-69285.md) | Aug 5, 2026 | | Linux | libkcapi RHEL 8 | 0:1.4.0-3.el8_10 | [RHSA-2026:67266](https://patchblox.com/security/data/fix/linux/rhsa-2026-67266.md) | Sep 19, 2026 | | Linux | libkcapi RHEL 9 | 0:1.4.0-3.el9_8 | [RHSA-2026:67265](https://patchblox.com/security/data/fix/linux/rhsa-2026-67265.md) | Sep 19, 2026 | | Linux | libkcapi almalinux 10 | 1.5.1-1.el10_2 | [ALSA-2026:67267](https://patchblox.com/security/data/fix/linux/alsa-2026-67267.md) | Sep 14, 2026 | | Linux | libkcapi almalinux 8 | 1.4.0-3.el8_10 | [ALSA-2026:67266](https://patchblox.com/security/data/fix/linux/alsa-2026-67266.md) | Sep 14, 2026 | | Linux | libkcapi almalinux 9 | 1.4.0-3.el9_8 | [ALSA-2026:67265](https://patchblox.com/security/data/fix/linux/alsa-2026-67265.md) | Sep 14, 2026 | | Linux | libkcapi ol 10 | 0:1.5.1-1.0.1.el10_2 | [ELSA-2026-67267-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67267-0.md) | Sep 15, 2026 | | Linux | libkcapi ol 8 | 0:1.4.0-3.0.1.el8_10 | [ELSA-2026-67266-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67266-0.md) | Sep 14, 2026 | | Linux | libkcapi ol 9 | 0:1.4.0-3.0.1.el9_8 | [ELSA-2026-67265-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67265-0.md) | Sep 14, 2026 | | Linux | libkcapi rocky 10 | 0:1.5.1-1.el10_2 | [RLSA-2026:67267](https://patchblox.com/security/data/fix/linux/rlsa-2026-67267.md) | Sep 15, 2026 | | Linux | libkcapi rocky 8 | 0:1.4.0-3.el8_10 | [RLSA-2026:67266](https://patchblox.com/security/data/fix/linux/rlsa-2026-67266.md) | Sep 15, 2026 | | Linux | libkcapi rocky 9 | 0:1.4.0-3.el9_8 | [RLSA-2026:67265](https://patchblox.com/security/data/fix/linux/rlsa-2026-67265.md) | Sep 15, 2026 | | Linux | libkcapi-hasher almalinux 10 | 1.5.1-1.el10_2 | [ALSA-2026:67267](https://patchblox.com/security/data/fix/linux/alsa-2026-67267.md) | Sep 14, 2026 | | Linux | libkcapi-hasher ol 10 | 0:1.5.1-1.0.1.el10_2 | [ELSA-2026-67267-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67267-0.md) | Sep 15, 2026 | | Linux | libkcapi-hmaccalc RHEL 8 | 0:1.4.0-3.el8_10 | [RHSA-2026:67266](https://patchblox.com/security/data/fix/linux/rhsa-2026-67266.md) | Sep 19, 2026 | | Linux | libkcapi-hmaccalc RHEL 9 | 0:1.4.0-3.el9_8 | [RHSA-2026:67265](https://patchblox.com/security/data/fix/linux/rhsa-2026-67265.md) | Sep 19, 2026 | | Linux | libkcapi-hmaccalc almalinux 10 | 1.5.1-1.el10_2 | [ALSA-2026:67267](https://patchblox.com/security/data/fix/linux/alsa-2026-67267.md) | Sep 14, 2026 | | Linux | libkcapi-hmaccalc almalinux 8 | 1.4.0-3.el8_10 | [ALSA-2026:67266](https://patchblox.com/security/data/fix/linux/alsa-2026-67266.md) | Sep 14, 2026 | | Linux | libkcapi-hmaccalc almalinux 9 | 1.4.0-3.el9_8 | [ALSA-2026:67265](https://patchblox.com/security/data/fix/linux/alsa-2026-67265.md) | Sep 14, 2026 | | Linux | libkcapi-hmaccalc ol 10 | 0:1.5.1-1.0.1.el10_2 | [ELSA-2026-67267-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67267-0.md) | Sep 15, 2026 | | Linux | libkcapi-hmaccalc ol 8 | 0:1.4.0-3.0.1.el8_10 | [ELSA-2026-67266-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67266-0.md) | Sep 14, 2026 | | Linux | libkcapi-hmaccalc ol 9 | 0:1.4.0-3.0.1.el9_8 | [ELSA-2026-67265-0](https://patchblox.com/security/data/fix/linux/elsa-2026-67265-0.md) | Sep 14, 2026 | --- Data as of 2026-11-08T19:12:23Z UTC. 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