{"cve":"CVE-2009-0343","nvd":{"published":"2009-01-29T19:30:00.313","modified":"2026-06-16T23:04:49.273","status":"Modified","description":"Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://scary.beasts.org/security/CESA-2009-001.html","http://scarybeastsecurity.blogspot.com/2009/01/bypassing-syscall-filtering.html","http://www.citi.umich.edu/u/provos/systrace/","http://www.securityfocus.com/archive/1/500377/100/0/threaded","http://www.securityfocus.com/bid/33417"],"products":["niels_provos:systrace"],"source":"nvd","synced_at":"2026-10-19T19:53:23.791937413+00:00"},"epss":{"cve":"CVE-2009-0343","score":0.00816,"percentile":0.57095,"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."]}