{"id":"UBUNTU-CVE-2026-71227","details":"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.","modified":"2026-08-13T00:14:08Z","published":"2026-08-05T13:24:00Z","upstream":["CVE-2026-71227"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-71227"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-71227"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2462867"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-71227"}],"affected":[{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS:16.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips-updates%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13.0-0ubuntu1~ppa1","0.13.0-0ubuntu1~ppa2"],"ecosystem_specific":{"binaries":[{"binary_name":"libkcapi-bin","binary_version":"0.13.0-0ubuntu1~ppa2"},{"binary_version":"0.13.0-0ubuntu1~ppa2","binary_name":"libkcapi0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS:16.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13.0-0ubuntu1~ppa1","0.13.0-0ubuntu1~ppa2"],"ecosystem_specific":{"binaries":[{"binary_version":"0.13.0-0ubuntu1~ppa2","binary_name":"libkcapi-bin"},{"binary_version":"0.13.0-0ubuntu1~ppa2","binary_name":"libkcapi0"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.0-2","1.0.1-1","1.0.2-1","1.0.3-2"],"ecosystem_specific":{"binaries":[{"binary_name":"kcapi-tools","binary_version":"1.0.3-2"},{"binary_name":"libkcapi1","binary_version":"1.0.3-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS-updates:18.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips-updates%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-2fips3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.3-2fips3","binary_name":"kcapi-tools"},{"binary_name":"libkcapi1","binary_version":"1.0.3-2fips3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS:18.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.3-2fips3"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.3-2fips3","binary_name":"kcapi-tools"},{"binary_name":"libkcapi1","binary_version":"1.0.3-2fips3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.1.5-1"],"ecosystem_specific":{"binaries":[{"binary_name":"kcapi-tools","binary_version":"1.1.5-1"},{"binary_name":"libkcapi1","binary_version":"1.1.5-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS-updates:20.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips-updates%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.5-1fips1"],"ecosystem_specific":{"binaries":[{"binary_name":"kcapi-tools","binary_version":"1.1.5-1fips1"},{"binary_name":"libkcapi1","binary_version":"1.1.5-1fips1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:Pro:FIPS:20.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=fips%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.5-1fips1"],"ecosystem_specific":{"binaries":[{"binary_name":"kcapi-tools","binary_version":"1.1.5-1fips1"},{"binary_version":"1.1.5-1fips1","binary_name":"libkcapi1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-71227.json"}},{"package":{"name":"libkcapi","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libkcapi?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-1","1.3.1-1","1.3.1-2","1.3.1-3","1.4.0-1"],"ecosystem_specific":{"bin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