Medium
libkcapi — security advisory
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.
- Products
- libkcapi
- Affected versions
- 0.13.0-0ubuntu1~ppa1, 0.13.0-0ubuntu1~ppa2, 1.0.0-2, 1.0.1-1, 1.0.2-1, 1.0.3-2, 1.0.3-2fips3, 1.1.3-1, 1.1.5-1, 1.1.5-1fips1, 1.2.1-1, 1.3.1-1, 1.3.1-2, 1.3.1-3, 1.4.0-1, 1.4.0-1ubuntu0.1~Fips1, 1.4.0-1ubuntu3, 1.4.0-1ubuntu4, 1.4.0-1ubuntu5
- Fixed versions
- Not specified
- CVEs
- CVE-2026-71227
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:14 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2026-71227
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
libkcapi
Fixed versions: Not specified
Complete source record
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],
"modified": "2026-10-17T13:00:46.976692225Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-71227",
"https://www.cve.org/CVERecord?id=CVE-2026-71227",
"https://bugzilla.redhat.com/show_bug.cgi?id=2462867",
"https://access.redhat.com/security/cve/CVE-2026-71227"
]
},
"related_cves": [
{
"value": "CVE-2026-71227",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360830,
"published_at": "2026-08-05T13:24:00+00:00"
}