{"cve":"CVE-2026-80551","nvd":{"published":"2026-08-26T15:17:09.610","modified":"2026-10-16T20:17:59.390","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ns390/vfio_ccw: Ensure first IDAW remains constant\n\nThe first IDAW in a list does not need to be on a 2K/4K boundary\nlike all others, and so is read separately to accurately calculate\nthe size of the buffer needed to read the full IDAL.\n\nVerify that the address found in the first IDAW is unchanged between\nreads, to ensure a consistent set of IDAWs being worked with.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":9.3},"cwes":[],"references":["https://git.kernel.org/stable/c/08ef2a82115690d6e229615872ac1731af732497","https://git.kernel.org/stable/c/0d46c2565f173bcddcdcaf44a4f69789a20535e2","https://git.kernel.org/stable/c/460b977a4e71cc319fdadf91c193ec3beaa57263","https://git.kernel.org/stable/c/565bef268d75bf7df665bce6923a88cd0eb74592","https://git.kernel.org/stable/c/fc59e9482117ebdccd6dc7fa8082f8b980fd021e"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-80551","score":0.00196,"percentile":0.09172,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}