{"cve":"CVE-2018-20124","nvd":{"published":"2018-12-20T23:29:02.177","modified":"2026-06-17T01:52:18.430","status":"Modified","description":"hw/rdma/rdma_backend.c in QEMU allows guest OS users to trigger out-of-bounds access via a PvrdmaSqWqe ring element with a large num_sge value.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":5.5},"cwes":["CWE-125"],"references":["http://www.openwall.com/lists/oss-security/2018/12/18/2","http://www.securityfocus.com/bid/106290","https://lists.gnu.org/archive/html/qemu-devel/2018-12/msg02822.html","https://usn.ubuntu.com/3923-1/","http://www.openwall.com/lists/oss-security/2018/12/18/2"],"products":["canonical:ubuntu_linux","qemu:qemu"],"source":"nvd","synced_at":"2026-10-19T20:54:36.112582389+00:00"},"epss":{"cve":"CVE-2018-20124","score":0.00488,"percentile":0.42058,"date":"2026-10-31"},"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."]}