{"cve":"CVE-2016-7421","nvd":{"published":"2016-12-10T00:59:17.293","modified":"2026-06-17T00:53:02.180","status":"Modified","description":"The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","score":4.4},"cwes":["CWE-834"],"references":["http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=d251157ac1928191af851d199a9ff255d330bec9","http://www.openwall.com/lists/oss-security/2016/09/16/3","http://www.openwall.com/lists/oss-security/2016/09/16/9","http://www.securityfocus.com/bid/92998","https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html"],"products":["debian:debian_linux","qemu:qemu"],"source":"nvd","synced_at":"2026-10-19T20:41:25.729257544+00:00"},"epss":{"cve":"CVE-2016-7421","score":0.00405,"percentile":0.34773,"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."]}