CVE-2026-71226 Libkcapi: memory corruption via uncanceled aio requests on error in libkcapi's one-shot aio path
Attackers can trigger memory corruption in libkcapi's AIO path, potentially leading to code execution or privilege escalation on affected Linux systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-71226?
CVE-2026-71226 is a high-severity use after free vulnerability in Redhat Enterprise Linux, published on 5 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-416
Which versions are affected by CVE-2026-71226?
It affects 4 products.
Products include Redhat Enterprise Linux, Redhat Hardened Images, Redhat Openshift Container Platform, Smuellerdd Libkcapi.
How do I fix CVE-2026-71226?
Apply the vendor's patch.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-71226 being exploited?
There is no known exploitation of CVE-2026-71226 in the wild and no public exploit code.
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Sources
Also known as ALPINE-CVE-2026-71226, AZL-94658, BELL-CVE-2026-71226, DEBIAN-CVE-2026-71226, GHSA-rg4h-x337-qh8m, UBUNTU-CVE-2026-71226.