CVE-2019-5611

Name: CVE-2019-5611
Creator: NVD / NIST
Published: 2019-08-30T09:15:20.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.42%

Last modified Jun 17, 2026

CVE-2019-5611 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing check in the function to arrange data in a chain of mbufs could cause data returned not to be contiguous. Extra checks in the IPv6 stack could catch the error condition and trigger a kernel panic, leading to a remote denial of service.. EPSS estimates a 4.42% chance of exploitation in the next 30 days.

Description

In FreeBSD 12.0-STABLE before r350828, 12.0-RELEASE before 12.0-RELEASE-p10, 11.3-STABLE before r350829, 11.3-RELEASE before 11.3-RELEASE-p3, and 11.2-RELEASE before 11.2-RELEASE-p14, a missing check in the function to arrange data in a chain of mbufs could cause data returned not to be contiguous. Extra checks in the IPv6 stack could catch the error condition and trigger a kernel panic, leading to a remote denial of service.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

4.42%

90.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.2
Freebsd	Freebsd	11.3
Freebsd	Freebsd	12.0
Netapp	Clustered Data Ontap	All versions

References

http://packetstormsecurity.com/files/154170/FreeBSD-Security-Advisory-FreeBSD-SA-19-22.mbuf.htmlExploit, Patch, Third Party Advisory, VDB Entry
https://seclists.org/bugtraq/2019/Aug/33Exploit, Mailing List, Patch, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190910-0002/Third Party Advisory
http://packetstormsecurity.com/files/154170/FreeBSD-Security-Advisory-FreeBSD-SA-19-22.mbuf.htmlExploit, Patch, Third Party Advisory, VDB Entry
https://seclists.org/bugtraq/2019/Aug/33Exploit, Mailing List, Patch, Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:22.mbuf.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190910-0002/Third Party Advisory

Timeline

Published: Aug 30, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5611?

How severe is CVE-2019-5611?

CVE-2019-5611 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.42% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5611?

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-2019-5611?

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

Scan your code now

Source: NVD / NIST