Infinite loop Affecting smuellerDD/libkcapi package, versions [,1.5.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UNMANAGED-SMUELLERDDLIBKCAPI-18600606
- published9 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-71227 (opens in a new tab)How to fix?
Upgrade smuellerDD/libkcapi to version 1.5.1 or higher.
Overview
Affected versions of this package are vulnerable to Infinite loop in the _kcapi_aio_read_all function when an AIO-enabled handle is reused after a prior completion error. An attacker can cause the application or thread to become unresponsive by triggering a non-terminating wait loop through repeated AIO operations after an error. This is only exploitable if the application continues to reuse AIO-enabled handles following a completion error.
Workaround
This vulnerability can be mitigated by avoiding initialization of handles with KCAPI_INIT_AIO unless necessary, and by destroying and reinitializing handles after any AIO completion error instead of reusing them.