CVE-2016-6243

Name: CVE-2016-6243
Creator: NVD / NIST
Published: 2017-03-07T16:59:00.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.43%

Last modified Jun 17, 2026

CVE-2016-6243 is a vulnerability of currently unknown severity. thrsleep in kern/kern_synch.c in OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a crafted value in the tsp parameter of the __thrsleep system call.. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

Description

thrsleep in kern/kern_synch.c in OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a crafted value in the tsp parameter of the __thrsleep system call.

Metrics

EPSS Probability

0.43%

34.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Openbsd	Openbsd	5.8
Openbsd	Openbsd	5.9

References

http://www.openbsd.org/errata58.htmlRelease Notes
http://www.openbsd.org/errata59.htmlRelease Notes
http://www.openwall.com/lists/oss-security/2016/07/14/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/07/17/7Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/91805
http://www.openbsd.org/errata58.htmlRelease Notes
http://www.openbsd.org/errata59.htmlRelease Notes
http://www.openwall.com/lists/oss-security/2016/07/14/5Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/07/17/7Exploit, Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/91805

Timeline

Published: Mar 7, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-6243?

thrsleep in kern/kern_synch.c in OpenBSD 5.8 and 5.9 allows local users to cause a denial of service (kernel panic) via a crafted value in the tsp parameter of the __thrsleep system call.

How severe is CVE-2016-6243?

Severity scoring for CVE-2016-6243 is pending analysis. The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6243?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-6243?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST