{"cve":"CVE-2007-1189","nvd":{"published":"2007-03-02T21:18:00.000","modified":"2026-06-16T22:37:06.883","status":"Modified","description":"Integer overflow in the envwrite function in the Alcatel-Lucent Bell Labs Plan 9 kernel allows local users to overwrite certain memory addresses with kernel memory via a large n argument, as demonstrated by (1) modifying the iseve function to gain privileges and (2) making the devpermcheck function grant unrestricted device permissions.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://kernelspace.us/itheft.c","http://lists.immunitysec.com/pipermail/dailydave/2007-February/004118.html","http://osvdb.org/34956","http://www.securityfocus.com/bid/22749","https://www.exploit-db.com/exploits/3383"],"products":["bell_labs:plan_9"],"source":"nvd","synced_at":"2026-10-19T19:44:49.019236172+00:00"},"epss":{"cve":"CVE-2007-1189","score":0.00804,"percentile":0.56743,"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."]}