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CVE-2006-4516

MediumPublished

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...

Published: Oct 12, 2006
Updated: Aug 7, 2024
Assigning CNA: mitre
Evidence observed: Oct 12, 2006

Primary CVSS

4.9/ 10Medium

nvd · CVSS 2.0

AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS probability estimate

0.8%

Low · next 30 days

Percentile: 55.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

FreeBSD 5.4/6.0 - 'ptrace PT_LWPINFO' Local Denial of ServiceExploit
kokanin · bsd · Oct 12, 2006

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