{"id":"CVE-2006-4516","aliases":["EUVD-2006-4504","GHSA-h93q-5v68-w53c"],"status":"published","title":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service ...","description":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.","severity":{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00812,"percentile":0.57233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2006-10-12T00:00:00Z","modified":"2026-06-16T22:29:15Z","exploits":[{"source":"exploitdb","id":"EDB-2524","title":"FreeBSD 5.4/6.0 - 'ptrace PT_LWPINFO' Local Denial of Service","type":"dos","platform":"bsd","date":"2006-10-12","verified":true,"url":"https://www.exploit-db.com/exploits/2524"}],"products":[{"vendor":"freebsd","product":"freebsd"}],"references":[{"url":"http://secunia.com/advisories/22367","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=419","tags":["third-party-advisory","x_refsource_IDEFENSE","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/20440","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/29476","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2006-4516"},{"url":"https://github.com/advisories/GHSA-h93q-5v68-w53c"}],"sources":{"cve":[{"id":"CVE-2006-4516","description":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.","status":"published","published":"2006-10-12T00:00:00Z","modified":"2024-08-07T19:14:47.434Z","updated_at":"2026-11-02T14:33:50.738595Z"}],"euvd":[{"id":"EUVD-2006-4504","description":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.","status":"published","published":"2006-10-12T00:00:00Z","modified":"2024-08-07T19:14:47Z","updated_at":"2026-11-03T01:15:51.734759Z"}],"ghsa":[{"id":"GHSA-h93q-5v68-w53c","title":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service ...","description":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.","status":"published","published":"2022-05-01T07:19:18Z","modified":"2023-01-31T05:01:53Z","updated_at":"2026-11-02T14:48:09.208669Z"}],"nvd":[{"id":"CVE-2006-4516","description":"Integer signedness error in FreeBSD 6.0-RELEASE allows local users to cause a denial of service (memory corruption and kernel panic) via a PT_LWPINFO ptrace command with a large negative data value that satisfies a signed maximum value check but is used in an unsigned copyout function call.","status":"published","published":"2006-10-12T00:07:00Z","modified":"2026-06-16T22:29:15.197Z","cvss":[{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:06.675668Z"}]}}