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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libkcapiUpgrade libkcapi-hmaccalc | Oct 11, 2026 | Sep 14, 2026 |
| Alpine Linux | — | Upgrade libkcapi | Aug 25, 2026 | Aug 5, 2026 |
| Oracle_linux | — | Upgrade libkcapi-hasherUpgrade libkcapiUpgrade libkcapi-hmaccalc | Oct 22, 2026 | Aug 5, 2026 |
| Redhat_linux | — | Upgrade libkcapi-debuginfoUpgrade libkcapi-hmaccalc-debuginfoUpgrade libkcapi-tests-debuginfoUpgrade libkcapi-fipscheck-debuginfoUpgrade libkcapi-hasher-debuginfoUpgrade libkcapi-debugsourceUpgrade libkcapi-tools-debuginfoUpgrade libkcapi-hasherUpgrade libkcapiUpgrade libkcapi-hmaccalc | Aug 10, 2026 | Aug 5, 2026 |
| Rocky_linux | — | Upgrade libkcapi-debugsourceUpgrade libkcapi-hmaccalcUpgrade libkcapiUpgrade libkcapi-debuginfoUpgrade libkcapi-hmaccalc-debuginfo | Sep 16, 2026 | Sep 15, 2026 |
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