CVE-2016-8632

Name: CVE-2016-8632
Creator: NVD / NIST
Published: 2016-11-28T03:59:04.92+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2016-8632 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The tipc_msg_build function in net/tipc/msg.c in the Linux kernel through 4.8.11 does not validate the relationship between the minimum fragment length and the maximum packet size, which allows local users to gain privileges or cause a denial of service (heap-based buffer overflow) by leveraging the CAP_NET_ADMIN capability.. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

The tipc_msg_build function in net/tipc/msg.c in the Linux kernel through 4.8.11 does not validate the relationship between the minimum fragment length and the maximum packet size, which allows local users to gain privileges or cause a denial of service (heap-based buffer overflow) by leveraging the CAP_NET_ADMIN capability.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.40%

31.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Linux	Linux Kernel	>= 2.6.16, < 3.2.85
Linux	Linux Kernel	>= 3.3, < 3.16.40
Linux	Linux Kernel	>= 3.17, < 4.1.37
Linux	Linux Kernel	>= 4.2, < 4.4.65
Linux	Linux Kernel	>= 4.5, < 4.8.14

References

http://www.openwall.com/lists/oss-security/2016/11/08/5Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/94211Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1390832Issue Tracking
https://www.mail-archive.com/netdev%40vger.kernel.org/msg133205.html
http://www.openwall.com/lists/oss-security/2016/11/08/5Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/94211Third Party Advisory, VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=1390832Issue Tracking
https://www.mail-archive.com/netdev%40vger.kernel.org/msg133205.html

Timeline

Published: Nov 28, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-8632?

How severe is CVE-2016-8632?

CVE-2016-8632 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2016-8632?

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-2016-8632?

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

Scan your code now

Source: NVD / NIST