CVE-1999-0912

FreeBSD - Denial of Service via VFS Cache File Opening

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0912. PoCs published by Charles M. Hannum.

AI-analyzed exploit summary This exploit targets a denial of service vulnerability in FreeBSD's VFS cache by creating a large number of hard links to consume wired memory. The code generates directories and files with long names, then creates multiple hard links to force memory exhaustion.

Description

FreeBSD VFS cache (vfs_cache) allows local users to cause a denial of service by opening a large number of files.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Charles M. Hannum · cdosfreebsd
https://www.exploit-db.com/exploits/19505

This exploit targets a denial of service vulnerability in FreeBSD's VFS cache by creating a large number of hard links to consume wired memory. The code generates directories and files with long names, then creates multiple hard links to force memory exhaustion.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Moderate
Reliability
Reliable
Target: FreeBSD versions 3.0 and later
No auth needed
Prerequisites: Local or remote access to a vulnerable FreeBSD system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://www.osvdb.org/1079
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/653

Scores

EPSS 0.0057
EPSS Percentile 43.0%

Details

Status published
Products (3)
freebsd/freebsd 3.0
freebsd/freebsd 3.1
freebsd/freebsd 3.2
Published Sep 22, 1999
Tracked Since Feb 18, 2026