CVE-2006-4516

FreeBSD 6.0-RELEASE - Denial of Service via PT_LWPINFO ptrace Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2006-4516. PoCs published by kokanin.

AI-analyzed exploit summary This exploit leverages a ptrace vulnerability (CVE-2006-4516) in FreeBSD to attach to a target process and potentially manipulate its execution. The code uses PT_ATTACH and PT_LWPINFO to interact with the process, though the actual payload for exploitation is minimal.

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.

Exploits (1)

exploitdb WORKING POC VERIFIED
by kokanin · cdosbsd
https://www.exploit-db.com/exploits/2524

This exploit leverages a ptrace vulnerability (CVE-2006-4516) in FreeBSD to attach to a target process and potentially manipulate its execution. The code uses PT_ATTACH and PT_LWPINFO to interact with the process, though the actual payload for exploitation is minimal.

Classification
Working Poc 90%
Attack Type
Lpe
Complexity
Trivial
Reliability
Theoretical
Target: FreeBSD (versions affected by CVE-2006-4516)
No auth needed
Prerequisites: Target process ID · Local access to the system
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/22367
Patch, Vendor Advisory third-party-advisory x_refsource_idefense
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=419
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/20440
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/29476

Scores

EPSS 0.0078
EPSS Percentile 51.2%

Details

Status published
Products (1)
freebsd/freebsd 6.0 release
Published Oct 12, 2006
Tracked Since Feb 18, 2026