{"id":"CVE-2002-1420","aliases":["EUVD-2002-1403","GHSA-63f4-84wq-87g5"],"status":"published","title":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite...","description":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.","severity":{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0033,"percentile":0.2627,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2003-04-11T04:00:00Z","modified":"2026-06-16T21:59:17Z","products":[{"vendor":"openbsd","product":"openbsd"}],"references":[{"url":"http://www.securityfocus.com/bid/5442","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.iss.net/security_center/static/9809.php","tags":["vdb-entry","x_refsource_XF","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.kb.cert.org/vuls/id/259787","tags":["third-party-advisory","x_refsource_CERT-VN","x_transferred","US Government Resource"]},{"url":"http://www.osvdb.org/7554","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102918817012863\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-1420"},{"url":"https://github.com/advisories/GHSA-63f4-84wq-87g5"}],"sources":{"cve":[{"id":"CVE-2002-1420","description":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-08T03:26:27.5Z","updated_at":"2026-11-02T14:33:54.972584Z"}],"euvd":[{"id":"EUVD-2002-1403","description":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-08T03:26:27Z","updated_at":"2026-11-03T01:14:56.257509Z"}],"ghsa":[{"id":"GHSA-63f4-84wq-87g5","title":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite...","description":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.","status":"published","published":"2022-04-30T18:21:07Z","modified":"2023-01-30T05:06:09Z","updated_at":"2026-11-02T14:47:26.333114Z"}],"nvd":[{"id":"CVE-2002-1420","description":"Integer signedness error in select() on OpenBSD 3.1 and earlier allows local users to overwrite arbitrary kernel memory via a negative value for the size parameter, which satisfies the boundary check as a signed integer, but is later used as an unsigned integer during a data copying operation.","status":"published","published":"2003-04-11T04:00:00Z","modified":"2026-06-16T21:59:17.757Z","cvss":[{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:44.251133Z"}]}}