CVE-2002-0820 — HIGH severity vulnerability (FreeBSD kernel 4.6 and earlier closes the file descriptors 0)
FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local users to reuse the file descriptors in a setuid or setgid program to modify critical data and gain privileges.
| CVE ID | CVE-2002-0820 |
|---|---|
| Severity | HIGH |
| CVSS score | 7.2 |
| CVSS vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| CWE | NVD-CWE-Other |
| Status | Modified |
| Published | 2002-08-12 |
| Last modified | 2026-04-16 |
| Description | FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local users to reuse the file descriptors in a setuid or setgid program to modify critical data and gain privileges. |
| Source | NIST National Vulnerability Database |
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