CVE-2026-86566 (GCVE-0-2026-86566)
Vulnerability from cvelistv5
Published
2026-10-14 17:52
Modified
2026-10-14 19:34
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-191 - Integer Underflow (Wrap or Wraparound)
Summary
A flaw was found in DPDK lib/vhost. A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.
References
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Impacted products
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| Red Hat | Fast Datapath for RHEL 10 |
cpe:/o:redhat:enterprise_linux:10::fastdatapath |
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A guest with runt RX descriptors can underflow the copy length in vhost enqueue, causing a denial of service in a shared vhost backend such as OVS-DPDK.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-191\", \"description\": \"Integer Underflow (Wrap or Wraparound)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-10-14T17:52:01.224Z\"}, \"x_redhatCweChain\": \"CWE-191: Integer Underflow (Wrap or Wraparound)\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-86566\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-14T19:34:42.540Z\", \"dateReserved\": \"2026-09-08T02:56:43.567Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-10-14T17:52:01.224Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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